21893440

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2207}}^1$

素因数の和:2255

約数の個数: 56

約数和(自身を含む): 53839872

約数和(自身を除く): 31946432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2207, 2480, 4414, 4960, 8828, 9920, 11035, 17656, 22070, 35312, 44140, 68417, 70624, 88280, 136834, 141248, 176560, 273668, 342085, 353120, 547336, 684170, 706240, 1094672, 1368340, 2189344, 2736680, 4378688, 5473360, 10946720, 21893440]

約数ペア:

[(1, 21893440), (2, 10946720), (4, 5473360), (5, 4378688), (8, 2736680), (10, 2189344), (16, 1368340), (20, 1094672), (31, 706240), (32, 684170), (40, 547336), (62, 353120), (64, 342085), (80, 273668), (124, 176560), (155, 141248), (160, 136834), (248, 88280), (310, 70624), (320, 68417), (496, 44140), (620, 35312), (992, 22070), (1240, 17656), (1984, 11035), (2207, 9920), (2480, 8828), (4414, 4960)]