21080750

素因数分解:

$2^1\times 5^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 42254784

約数和(自身を除く): 21174034

約数列:

[1, 2, 5, 10, 25, 37, 43, 50, 53, 74, 86, 106, 125, 185, 215, 250, 265, 370, 430, 530, 925, 1075, 1325, 1591, 1850, 1961, 2150, 2279, 2650, 3182, 3922, 4558, 4625, 5375, 6625, 7955, 9250, 9805, 10750, 11395, 13250, 15910, 19610, 22790, 39775, 49025, 56975, 79550, 84323, 98050, 113950, 168646, 198875, 245125, 284875, 397750, 421615, 490250, 569750, 843230, 2108075, 4216150, 10540375, 21080750]

約数ペア:

[(1, 21080750), (2, 10540375), (5, 4216150), (10, 2108075), (25, 843230), (37, 569750), (43, 490250), (50, 421615), (53, 397750), (74, 284875), (86, 245125), (106, 198875), (125, 168646), (185, 113950), (215, 98050), (250, 84323), (265, 79550), (370, 56975), (430, 49025), (530, 39775), (925, 22790), (1075, 19610), (1325, 15910), (1591, 13250), (1850, 11395), (1961, 10750), (2150, 9805), (2279, 9250), (2650, 7955), (3182, 6625), (3922, 5375), (4558, 4625)]