989968360

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:395

約数の個数: 128

約数和(自身を含む): 2395008000

約数和(自身を除く): 1405039640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 43, 58, 86, 89, 116, 145, 172, 178, 215, 223, 232, 290, 344, 356, 430, 445, 446, 580, 712, 860, 890, 892, 1115, 1160, 1247, 1720, 1780, 1784, 2230, 2494, 2581, 3560, 3827, 4460, 4988, 5162, 6235, 6467, 7654, 8920, 9589, 9976, 10324, 12470, 12905, 12934, 15308, 19135, 19178, 19847, 20648, 24940, 25810, 25868, 30616, 32335, 38270, 38356, 39694, 47945, 49880, 51620, 51736, 64670, 76540, 76712, 79388, 95890, 99235, 103240, 110983, 129340, 153080, 158776, 191780, 198470, 221966, 258680, 278081, 383560, 396940, 443932, 554915, 556162, 575563, 793880, 853421, 887864, 1109830, 1112324, 1151126, 1390405, 1706842, 2219660, 2224648, 2302252, 2780810, 2877815, 3413684, 4267105, 4439320, 4604504, 5561620, 5755630, 6827368, 8534210, 11123240, 11511260, 17068420, 23022520, 24749209, 34136840, 49498418, 98996836, 123746045, 197993672, 247492090, 494984180, 989968360]

約数ペア:

[(1, 989968360), (2, 494984180), (4, 247492090), (5, 197993672), (8, 123746045), (10, 98996836), (20, 49498418), (29, 34136840), (40, 24749209), (43, 23022520), (58, 17068420), (86, 11511260), (89, 11123240), (116, 8534210), (145, 6827368), (172, 5755630), (178, 5561620), (215, 4604504), (223, 4439320), (232, 4267105), (290, 3413684), (344, 2877815), (356, 2780810), (430, 2302252), (445, 2224648), (446, 2219660), (580, 1706842), (712, 1390405), (860, 1151126), (890, 1112324), (892, 1109830), (1115, 887864), (1160, 853421), (1247, 793880), (1720, 575563), (1780, 556162), (1784, 554915), (2230, 443932), (2494, 396940), (2581, 383560), (3560, 278081), (3827, 258680), (4460, 221966), (4988, 198470), (5162, 191780), (6235, 158776), (6467, 153080), (7654, 129340), (8920, 110983), (9589, 103240), (9976, 99235), (10324, 95890), (12470, 79388), (12905, 76712), (12934, 76540), (15308, 64670), (19135, 51736), (19178, 51620), (19847, 49880), (20648, 47945), (24940, 39694), (25810, 38356), (25868, 38270), (30616, 32335)]