20996933240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{383}}^1\times {\mathrm{80621}}^1$

素因数の和:81032

約数の個数: 64

約数和(自身を含む): 50153333760

約数和(自身を除く): 29156400520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 383, 680, 766, 1532, 1915, 3064, 3830, 6511, 7660, 13022, 15320, 26044, 32555, 52088, 65110, 80621, 130220, 161242, 260440, 322484, 403105, 644968, 806210, 1370557, 1612420, 2741114, 3224840, 5482228, 6852785, 10964456, 13705570, 27411140, 30877843, 54822280, 61755686, 123511372, 154389215, 247022744, 308778430, 524923331, 617556860, 1049846662, 1235113720, 2099693324, 2624616655, 4199386648, 5249233310, 10498466620, 20996933240]

約数ペア:

[(1, 20996933240), (2, 10498466620), (4, 5249233310), (5, 4199386648), (8, 2624616655), (10, 2099693324), (17, 1235113720), (20, 1049846662), (34, 617556860), (40, 524923331), (68, 308778430), (85, 247022744), (136, 154389215), (170, 123511372), (340, 61755686), (383, 54822280), (680, 30877843), (766, 27411140), (1532, 13705570), (1915, 10964456), (3064, 6852785), (3830, 5482228), (6511, 3224840), (7660, 2741114), (13022, 1612420), (15320, 1370557), (26044, 806210), (32555, 644968), (52088, 403105), (65110, 322484), (80621, 260440), (130220, 161242)]