18977890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2111}}^1$

素因数の和:2178

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 17517470

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 145, 155, 290, 310, 899, 1798, 2111, 4222, 4495, 8990, 10555, 21110, 61219, 65441, 122438, 130882, 306095, 327205, 612190, 654410, 1897789, 3795578, 9488945, 18977890]

約数ペア:

[(1, 18977890), (2, 9488945), (5, 3795578), (10, 1897789), (29, 654410), (31, 612190), (58, 327205), (62, 306095), (145, 130882), (155, 122438), (290, 65441), (310, 61219), (899, 21110), (1798, 10555), (2111, 8990), (4222, 4495)]