21759830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4129}}^1$

素因数の和:4184

約数の個数: 32

約数和(自身を含む): 42819840

約数和(自身を除く): 21060010

約数列:

[1, 2, 5, 10, 17, 31, 34, 62, 85, 155, 170, 310, 527, 1054, 2635, 4129, 5270, 8258, 20645, 41290, 70193, 127999, 140386, 255998, 350965, 639995, 701930, 1279990, 2175983, 4351966, 10879915, 21759830]

約数ペア:

[(1, 21759830), (2, 10879915), (5, 4351966), (10, 2175983), (17, 1279990), (31, 701930), (34, 639995), (62, 350965), (85, 255998), (155, 140386), (170, 127999), (310, 70193), (527, 41290), (1054, 20645), (2635, 8258), (4129, 5270)]