21353325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 40890240

約数和(自身を除く): 19536915

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 89, 105, 175, 267, 445, 457, 525, 623, 1335, 1371, 1869, 2225, 2285, 3115, 3199, 6675, 6855, 9345, 9597, 11425, 15575, 15995, 34275, 40673, 46725, 47985, 79975, 122019, 203365, 239925, 284711, 610095, 854133, 1016825, 1423555, 3050475, 4270665, 7117775, 21353325]

約数ペア:

[(1, 21353325), (3, 7117775), (5, 4270665), (7, 3050475), (15, 1423555), (21, 1016825), (25, 854133), (35, 610095), (75, 284711), (89, 239925), (105, 203365), (175, 122019), (267, 79975), (445, 47985), (457, 46725), (525, 40673), (623, 34275), (1335, 15995), (1371, 15575), (1869, 11425), (2225, 9597), (2285, 9345), (3115, 6855), (3199, 6675)]