21282250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 23196470

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 71, 109, 110, 125, 142, 218, 250, 275, 355, 545, 550, 710, 781, 1090, 1199, 1375, 1562, 1775, 2398, 2725, 2750, 3550, 3905, 5450, 5995, 7739, 7810, 8875, 11990, 13625, 15478, 17750, 19525, 27250, 29975, 38695, 39050, 59950, 77390, 85129, 97625, 149875, 170258, 193475, 195250, 299750, 386950, 425645, 851290, 967375, 1934750, 2128225, 4256450, 10641125, 21282250]

約数ペア:

[(1, 21282250), (2, 10641125), (5, 4256450), (10, 2128225), (11, 1934750), (22, 967375), (25, 851290), (50, 425645), (55, 386950), (71, 299750), (109, 195250), (110, 193475), (125, 170258), (142, 149875), (218, 97625), (250, 85129), (275, 77390), (355, 59950), (545, 39050), (550, 38695), (710, 29975), (781, 27250), (1090, 19525), (1199, 17750), (1375, 15478), (1562, 13625), (1775, 11990), (2398, 8875), (2725, 7810), (2750, 7739), (3550, 5995), (3905, 5450)]