20897625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 41932800

約数和(自身を除く): 21035175

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 125, 133, 175, 285, 375, 399, 419, 475, 525, 665, 875, 1257, 1425, 1995, 2095, 2375, 2625, 2933, 3325, 6285, 7125, 7961, 8799, 9975, 10475, 14665, 16625, 23883, 31425, 39805, 43995, 49875, 52375, 55727, 73325, 119415, 157125, 167181, 199025, 219975, 278635, 366625, 597075, 835905, 995125, 1099875, 1393175, 2985375, 4179525, 6965875, 20897625]

約数ペア:

[(1, 20897625), (3, 6965875), (5, 4179525), (7, 2985375), (15, 1393175), (19, 1099875), (21, 995125), (25, 835905), (35, 597075), (57, 366625), (75, 278635), (95, 219975), (105, 199025), (125, 167181), (133, 157125), (175, 119415), (285, 73325), (375, 55727), (399, 52375), (419, 49875), (475, 43995), (525, 39805), (665, 31425), (875, 23883), (1257, 16625), (1425, 14665), (1995, 10475), (2095, 9975), (2375, 8799), (2625, 7961), (2933, 7125), (3325, 6285)]