77556440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 201096000

約数和(自身を除く): 123539560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 37, 40, 52, 58, 65, 74, 104, 116, 130, 139, 145, 148, 185, 232, 260, 278, 290, 296, 370, 377, 481, 520, 556, 580, 695, 740, 754, 962, 1073, 1112, 1160, 1390, 1480, 1508, 1807, 1885, 1924, 2146, 2405, 2780, 3016, 3614, 3770, 3848, 4031, 4292, 4810, 5143, 5365, 5560, 7228, 7540, 8062, 8584, 9035, 9620, 10286, 10730, 13949, 14456, 15080, 16124, 18070, 19240, 20155, 20572, 21460, 25715, 27898, 32248, 36140, 40310, 41144, 42920, 51430, 52403, 55796, 66859, 69745, 72280, 80620, 102860, 104806, 111592, 133718, 139490, 149147, 161240, 205720, 209612, 262015, 267436, 278980, 298294, 334295, 419224, 524030, 534872, 557960, 596588, 668590, 745735, 1048060, 1193176, 1337180, 1491470, 1938911, 2096120, 2674360, 2982940, 3877822, 5965880, 7755644, 9694555, 15511288, 19389110, 38778220, 77556440]

約数ペア:

[(1, 77556440), (2, 38778220), (4, 19389110), (5, 15511288), (8, 9694555), (10, 7755644), (13, 5965880), (20, 3877822), (26, 2982940), (29, 2674360), (37, 2096120), (40, 1938911), (52, 1491470), (58, 1337180), (65, 1193176), (74, 1048060), (104, 745735), (116, 668590), (130, 596588), (139, 557960), (145, 534872), (148, 524030), (185, 419224), (232, 334295), (260, 298294), (278, 278980), (290, 267436), (296, 262015), (370, 209612), (377, 205720), (481, 161240), (520, 149147), (556, 139490), (580, 133718), (695, 111592), (740, 104806), (754, 102860), (962, 80620), (1073, 72280), (1112, 69745), (1160, 66859), (1390, 55796), (1480, 52403), (1508, 51430), (1807, 42920), (1885, 41144), (1924, 40310), (2146, 36140), (2405, 32248), (2780, 27898), (3016, 25715), (3614, 21460), (3770, 20572), (3848, 20155), (4031, 19240), (4292, 18070), (4810, 16124), (5143, 15080), (5365, 14456), (5560, 13949), (7228, 10730), (7540, 10286), (8062, 9620), (8584, 9035)]