1999968720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{268813}}^1$

素因数の和:268860

約数の個数: 80

約数和(自身を含む): 6399923712

約数和(自身を除く): 4399954992

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 268813, 537626, 806439, 1075252, 1344065, 1612878, 2150504, 2688130, 3225756, 4032195, 4301008, 5376260, 6451512, 8064390, 8333203, 10752520, 12903024, 16128780, 16666406, 21505040, 24999609, 32257560, 33332812, 41666015, 49999218, 64515120, 66665624, 83332030, 99998436, 124998045, 133331248, 166664060, 199996872, 249996090, 333328120, 399993744, 499992180, 666656240, 999984360, 1999968720]

約数ペア:

[(1, 1999968720), (2, 999984360), (3, 666656240), (4, 499992180), (5, 399993744), (6, 333328120), (8, 249996090), (10, 199996872), (12, 166664060), (15, 133331248), (16, 124998045), (20, 99998436), (24, 83332030), (30, 66665624), (31, 64515120), (40, 49999218), (48, 41666015), (60, 33332812), (62, 32257560), (80, 24999609), (93, 21505040), (120, 16666406), (124, 16128780), (155, 12903024), (186, 10752520), (240, 8333203), (248, 8064390), (310, 6451512), (372, 5376260), (465, 4301008), (496, 4032195), (620, 3225756), (744, 2688130), (930, 2150504), (1240, 1612878), (1488, 1344065), (1860, 1075252), (2480, 806439), (3720, 537626), (7440, 268813)]