21335150

素因数分解:

$2^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 41341104

約数和(自身を除く): 20005954

約数列:

[1, 2, 5, 10, 25, 50, 53, 83, 97, 106, 166, 194, 265, 415, 485, 530, 830, 970, 1325, 2075, 2425, 2650, 4150, 4399, 4850, 5141, 8051, 8798, 10282, 16102, 21995, 25705, 40255, 43990, 51410, 80510, 109975, 128525, 201275, 219950, 257050, 402550, 426703, 853406, 2133515, 4267030, 10667575, 21335150]

約数ペア:

[(1, 21335150), (2, 10667575), (5, 4267030), (10, 2133515), (25, 853406), (50, 426703), (53, 402550), (83, 257050), (97, 219950), (106, 201275), (166, 128525), (194, 109975), (265, 80510), (415, 51410), (485, 43990), (530, 40255), (830, 25705), (970, 21995), (1325, 16102), (2075, 10282), (2425, 8798), (2650, 8051), (4150, 5141), (4399, 4850)]