19826980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 43513344

約数和(自身を除く): 23686364

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 113, 124, 155, 226, 283, 310, 452, 565, 566, 620, 1130, 1132, 1415, 2260, 2830, 3503, 5660, 7006, 8773, 14012, 17515, 17546, 31979, 35030, 35092, 43865, 63958, 70060, 87730, 127916, 159895, 175460, 319790, 639580, 991349, 1982698, 3965396, 4956745, 9913490, 19826980]

約数ペア:

[(1, 19826980), (2, 9913490), (4, 4956745), (5, 3965396), (10, 1982698), (20, 991349), (31, 639580), (62, 319790), (113, 175460), (124, 159895), (155, 127916), (226, 87730), (283, 70060), (310, 63958), (452, 43865), (565, 35092), (566, 35030), (620, 31979), (1130, 17546), (1132, 17515), (1415, 14012), (2260, 8773), (2830, 7006), (3503, 5660)]