8428280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1020

約数の個数: 64

約数和(自身を含む): 22394880

約数和(自身を除く): 13966600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 971, 1085, 1240, 1736, 1942, 2170, 3884, 4340, 4855, 6797, 7768, 8680, 9710, 13594, 19420, 27188, 30101, 33985, 38840, 54376, 60202, 67970, 120404, 135940, 150505, 210707, 240808, 271880, 301010, 421414, 602020, 842828, 1053535, 1204040, 1685656, 2107070, 4214140, 8428280]

約数ペア:

[(1, 8428280), (2, 4214140), (4, 2107070), (5, 1685656), (7, 1204040), (8, 1053535), (10, 842828), (14, 602020), (20, 421414), (28, 301010), (31, 271880), (35, 240808), (40, 210707), (56, 150505), (62, 135940), (70, 120404), (124, 67970), (140, 60202), (155, 54376), (217, 38840), (248, 33985), (280, 30101), (310, 27188), (434, 19420), (620, 13594), (868, 9710), (971, 8680), (1085, 7768), (1240, 6797), (1736, 4855), (1942, 4340), (2170, 3884)]