21840120

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:170

約数の個数: 192

約数和(自身を含む): 77875200

約数和(自身を除く): 56035080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 31, 36, 38, 40, 45, 57, 60, 62, 72, 76, 90, 93, 95, 103, 114, 120, 124, 152, 155, 171, 180, 186, 190, 206, 228, 248, 279, 285, 309, 310, 342, 360, 372, 380, 412, 456, 465, 515, 558, 570, 589, 618, 620, 684, 744, 760, 824, 855, 927, 930, 1030, 1116, 1140, 1178, 1236, 1240, 1368, 1395, 1545, 1710, 1767, 1854, 1860, 1957, 2060, 2232, 2280, 2356, 2472, 2790, 2945, 3090, 3193, 3420, 3534, 3708, 3720, 3914, 4120, 4635, 4712, 5301, 5580, 5871, 5890, 6180, 6386, 6840, 7068, 7416, 7828, 8835, 9270, 9579, 9785, 10602, 11160, 11742, 11780, 12360, 12772, 14136, 15656, 15965, 17613, 17670, 18540, 19158, 19570, 21204, 23484, 23560, 25544, 26505, 28737, 29355, 31930, 35226, 35340, 37080, 38316, 39140, 42408, 46968, 47895, 53010, 57474, 58710, 60667, 63860, 70452, 70680, 76632, 78280, 88065, 95790, 106020, 114948, 117420, 121334, 127720, 140904, 143685, 176130, 182001, 191580, 212040, 229896, 234840, 242668, 287370, 303335, 352260, 364002, 383160, 485336, 546003, 574740, 606670, 704520, 728004, 910005, 1092006, 1149480, 1213340, 1456008, 1820010, 2184012, 2426680, 2730015, 3640020, 4368024, 5460030, 7280040, 10920060, 21840120]

約数ペア:

[(1, 21840120), (2, 10920060), (3, 7280040), (4, 5460030), (5, 4368024), (6, 3640020), (8, 2730015), (9, 2426680), (10, 2184012), (12, 1820010), (15, 1456008), (18, 1213340), (19, 1149480), (20, 1092006), (24, 910005), (30, 728004), (31, 704520), (36, 606670), (38, 574740), (40, 546003), (45, 485336), (57, 383160), (60, 364002), (62, 352260), (72, 303335), (76, 287370), (90, 242668), (93, 234840), (95, 229896), (103, 212040), (114, 191580), (120, 182001), (124, 176130), (152, 143685), (155, 140904), (171, 127720), (180, 121334), (186, 117420), (190, 114948), (206, 106020), (228, 95790), (248, 88065), (279, 78280), (285, 76632), (309, 70680), (310, 70452), (342, 63860), (360, 60667), (372, 58710), (380, 57474), (412, 53010), (456, 47895), (465, 46968), (515, 42408), (558, 39140), (570, 38316), (589, 37080), (618, 35340), (620, 35226), (684, 31930), (744, 29355), (760, 28737), (824, 26505), (855, 25544), (927, 23560), (930, 23484), (1030, 21204), (1116, 19570), (1140, 19158), (1178, 18540), (1236, 17670), (1240, 17613), (1368, 15965), (1395, 15656), (1545, 14136), (1710, 12772), (1767, 12360), (1854, 11780), (1860, 11742), (1957, 11160), (2060, 10602), (2232, 9785), (2280, 9579), (2356, 9270), (2472, 8835), (2790, 7828), (2945, 7416), (3090, 7068), (3193, 6840), (3420, 6386), (3534, 6180), (3708, 5890), (3720, 5871), (3914, 5580), (4120, 5301), (4635, 4712)]