81776160

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:651

約数の個数: 144

約数和(自身を含む): 282161880

約数和(自身を除く): 200385720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 109, 120, 144, 160, 180, 218, 240, 288, 327, 360, 436, 480, 521, 545, 654, 720, 872, 981, 1042, 1090, 1308, 1440, 1563, 1635, 1744, 1962, 2084, 2180, 2605, 2616, 3126, 3270, 3488, 3924, 4168, 4360, 4689, 4905, 5210, 5232, 6252, 6540, 7815, 7848, 8336, 8720, 9378, 9810, 10420, 10464, 12504, 13080, 15630, 15696, 16672, 17440, 18756, 19620, 20840, 23445, 25008, 26160, 31260, 31392, 37512, 39240, 41680, 46890, 50016, 52320, 56789, 62520, 75024, 78480, 83360, 93780, 113578, 125040, 150048, 156960, 170367, 187560, 227156, 250080, 283945, 340734, 375120, 454312, 511101, 567890, 681468, 750240, 851835, 908624, 1022202, 1135780, 1362936, 1703670, 1817248, 2044404, 2271560, 2555505, 2725872, 3407340, 4088808, 4543120, 5111010, 5451744, 6814680, 8177616, 9086240, 10222020, 13629360, 16355232, 20444040, 27258720, 40888080, 81776160]

約数ペア:

[(1, 81776160), (2, 40888080), (3, 27258720), (4, 20444040), (5, 16355232), (6, 13629360), (8, 10222020), (9, 9086240), (10, 8177616), (12, 6814680), (15, 5451744), (16, 5111010), (18, 4543120), (20, 4088808), (24, 3407340), (30, 2725872), (32, 2555505), (36, 2271560), (40, 2044404), (45, 1817248), (48, 1703670), (60, 1362936), (72, 1135780), (80, 1022202), (90, 908624), (96, 851835), (109, 750240), (120, 681468), (144, 567890), (160, 511101), (180, 454312), (218, 375120), (240, 340734), (288, 283945), (327, 250080), (360, 227156), (436, 187560), (480, 170367), (521, 156960), (545, 150048), (654, 125040), (720, 113578), (872, 93780), (981, 83360), (1042, 78480), (1090, 75024), (1308, 62520), (1440, 56789), (1563, 52320), (1635, 50016), (1744, 46890), (1962, 41680), (2084, 39240), (2180, 37512), (2605, 31392), (2616, 31260), (3126, 26160), (3270, 25008), (3488, 23445), (3924, 20840), (4168, 19620), (4360, 18756), (4689, 17440), (4905, 16672), (5210, 15696), (5232, 15630), (6252, 13080), (6540, 12504), (7815, 10464), (7848, 10420), (8336, 9810), (8720, 9378)]