28218750

素因数分解:

$2^1\times 3^1\times 5^6\times 7^1\times {\mathrm{43}}^1$

素因数の和:85

約数の個数: 112

約数和(自身を含む): 82498944

約数和(自身を除く): 54280194

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 43, 50, 70, 75, 86, 105, 125, 129, 150, 175, 210, 215, 250, 258, 301, 350, 375, 430, 525, 602, 625, 645, 750, 875, 903, 1050, 1075, 1250, 1290, 1505, 1750, 1806, 1875, 2150, 2625, 3010, 3125, 3225, 3750, 4375, 4515, 5250, 5375, 6250, 6450, 7525, 8750, 9030, 9375, 10750, 13125, 15050, 15625, 16125, 18750, 21875, 22575, 26250, 26875, 31250, 32250, 37625, 43750, 45150, 46875, 53750, 65625, 75250, 80625, 93750, 109375, 112875, 131250, 134375, 161250, 188125, 218750, 225750, 268750, 328125, 376250, 403125, 564375, 656250, 671875, 806250, 940625, 1128750, 1343750, 1881250, 2015625, 2821875, 4031250, 4703125, 5643750, 9406250, 14109375, 28218750]

約数ペア:

[(1, 28218750), (2, 14109375), (3, 9406250), (5, 5643750), (6, 4703125), (7, 4031250), (10, 2821875), (14, 2015625), (15, 1881250), (21, 1343750), (25, 1128750), (30, 940625), (35, 806250), (42, 671875), (43, 656250), (50, 564375), (70, 403125), (75, 376250), (86, 328125), (105, 268750), (125, 225750), (129, 218750), (150, 188125), (175, 161250), (210, 134375), (215, 131250), (250, 112875), (258, 109375), (301, 93750), (350, 80625), (375, 75250), (430, 65625), (525, 53750), (602, 46875), (625, 45150), (645, 43750), (750, 37625), (875, 32250), (903, 31250), (1050, 26875), (1075, 26250), (1250, 22575), (1290, 21875), (1505, 18750), (1750, 16125), (1806, 15625), (1875, 15050), (2150, 13125), (2625, 10750), (3010, 9375), (3125, 9030), (3225, 8750), (3750, 7525), (4375, 6450), (4515, 6250), (5250, 5375)]