68908840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1721}}^1$

素因数の和:1763

約数の個数: 128

約数和(自身を含む): 208293120

約数和(自身を除く): 139384280

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, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1721, 1820, 2002, 2860, 3080, 3442, 3640, 4004, 5005, 5720, 6884, 8008, 8605, 10010, 12047, 13768, 17210, 18931, 20020, 22373, 24094, 34420, 37862, 40040, 44746, 48188, 60235, 68840, 75724, 89492, 94655, 96376, 111865, 120470, 132517, 151448, 156611, 178984, 189310, 223730, 240940, 246103, 265034, 313222, 378620, 447460, 481880, 492206, 530068, 626444, 662585, 757240, 783055, 894920, 984412, 1060136, 1230515, 1252888, 1325170, 1566110, 1722721, 1968824, 2461030, 2650340, 3132220, 3445442, 4922060, 5300680, 6264440, 6890884, 8613605, 9844120, 13781768, 17227210, 34454420, 68908840]

約数ペア:

[(1, 68908840), (2, 34454420), (4, 17227210), (5, 13781768), (7, 9844120), (8, 8613605), (10, 6890884), (11, 6264440), (13, 5300680), (14, 4922060), (20, 3445442), (22, 3132220), (26, 2650340), (28, 2461030), (35, 1968824), (40, 1722721), (44, 1566110), (52, 1325170), (55, 1252888), (56, 1230515), (65, 1060136), (70, 984412), (77, 894920), (88, 783055), (91, 757240), (104, 662585), (110, 626444), (130, 530068), (140, 492206), (143, 481880), (154, 447460), (182, 378620), (220, 313222), (260, 265034), (280, 246103), (286, 240940), (308, 223730), (364, 189310), (385, 178984), (440, 156611), (455, 151448), (520, 132517), (572, 120470), (616, 111865), (715, 96376), (728, 94655), (770, 89492), (910, 75724), (1001, 68840), (1144, 60235), (1430, 48188), (1540, 44746), (1721, 40040), (1820, 37862), (2002, 34420), (2860, 24094), (3080, 22373), (3442, 20020), (3640, 18931), (4004, 17210), (5005, 13768), (5720, 12047), (6884, 10010), (8008, 8605)]