21404868

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{349}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 52920000

約数和(自身を除く): 31515132

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 269, 349, 538, 698, 807, 1047, 1076, 1396, 1614, 2094, 3228, 4188, 5111, 6631, 10222, 13262, 15333, 19893, 20444, 26524, 30666, 39786, 61332, 79572, 93881, 187762, 281643, 375524, 563286, 1126572, 1783739, 3567478, 5351217, 7134956, 10702434, 21404868]

約数ペア:

[(1, 21404868), (2, 10702434), (3, 7134956), (4, 5351217), (6, 3567478), (12, 1783739), (19, 1126572), (38, 563286), (57, 375524), (76, 281643), (114, 187762), (228, 93881), (269, 79572), (349, 61332), (538, 39786), (698, 30666), (807, 26524), (1047, 20444), (1076, 19893), (1396, 15333), (1614, 13262), (2094, 10222), (3228, 6631), (4188, 5111)]