721000280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1637}}^1$

素因数の和:1690

約数の個数: 192

約数和(自身を含む): 2195968320

約数和(自身を除く): 1474968040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 121, 130, 140, 143, 154, 182, 220, 242, 260, 280, 286, 308, 364, 385, 440, 455, 484, 520, 572, 605, 616, 715, 728, 770, 847, 910, 968, 1001, 1144, 1210, 1430, 1540, 1573, 1637, 1694, 1820, 2002, 2420, 2860, 3080, 3146, 3274, 3388, 3640, 4004, 4235, 4840, 5005, 5720, 6292, 6548, 6776, 7865, 8008, 8185, 8470, 10010, 11011, 11459, 12584, 13096, 15730, 16370, 16940, 18007, 20020, 21281, 22022, 22918, 31460, 32740, 33880, 36014, 40040, 42562, 44044, 45836, 55055, 57295, 62920, 65480, 72028, 85124, 88088, 90035, 91672, 106405, 110110, 114590, 126049, 144056, 148967, 170248, 180070, 198077, 212810, 220220, 229180, 234091, 252098, 297934, 360140, 396154, 425620, 440440, 458360, 468182, 504196, 595868, 630245, 720280, 744835, 792308, 851240, 936364, 990385, 1008392, 1170455, 1191736, 1260490, 1386539, 1489670, 1584616, 1638637, 1872728, 1980770, 2340910, 2520980, 2575001, 2773078, 2979340, 3277274, 3961540, 4681820, 5041960, 5150002, 5546156, 5958680, 6554548, 6932695, 7923080, 8193185, 9363640, 10300004, 11092312, 12875005, 13109096, 13865390, 16386370, 18025007, 20600008, 25750010, 27730780, 32772740, 36050014, 51500020, 55461560, 65545480, 72100028, 90125035, 103000040, 144200056, 180250070, 360500140, 721000280]

約数ペア:

[(1, 721000280), (2, 360500140), (4, 180250070), (5, 144200056), (7, 103000040), (8, 90125035), (10, 72100028), (11, 65545480), (13, 55461560), (14, 51500020), (20, 36050014), (22, 32772740), (26, 27730780), (28, 25750010), (35, 20600008), (40, 18025007), (44, 16386370), (52, 13865390), (55, 13109096), (56, 12875005), (65, 11092312), (70, 10300004), (77, 9363640), (88, 8193185), (91, 7923080), (104, 6932695), (110, 6554548), (121, 5958680), (130, 5546156), (140, 5150002), (143, 5041960), (154, 4681820), (182, 3961540), (220, 3277274), (242, 2979340), (260, 2773078), (280, 2575001), (286, 2520980), (308, 2340910), (364, 1980770), (385, 1872728), (440, 1638637), (455, 1584616), (484, 1489670), (520, 1386539), (572, 1260490), (605, 1191736), (616, 1170455), (715, 1008392), (728, 990385), (770, 936364), (847, 851240), (910, 792308), (968, 744835), (1001, 720280), (1144, 630245), (1210, 595868), (1430, 504196), (1540, 468182), (1573, 458360), (1637, 440440), (1694, 425620), (1820, 396154), (2002, 360140), (2420, 297934), (2860, 252098), (3080, 234091), (3146, 229180), (3274, 220220), (3388, 212810), (3640, 198077), (4004, 180070), (4235, 170248), (4840, 148967), (5005, 144056), (5720, 126049), (6292, 114590), (6548, 110110), (6776, 106405), (7865, 91672), (8008, 90035), (8185, 88088), (8470, 85124), (10010, 72028), (11011, 65480), (11459, 62920), (12584, 57295), (13096, 55055), (15730, 45836), (16370, 44044), (16940, 42562), (18007, 40040), (20020, 36014), (21281, 33880), (22022, 32740), (22918, 31460)]