221018840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25463}}^1$

素因数の和:25512

約数の個数: 64

約数和(自身を含む): 586690560

約数和(自身を除く): 365671720

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, 1085, 1240, 1736, 2170, 4340, 8680, 25463, 50926, 101852, 127315, 178241, 203704, 254630, 356482, 509260, 712964, 789353, 891205, 1018520, 1425928, 1578706, 1782410, 3157412, 3564820, 3946765, 5525471, 6314824, 7129640, 7893530, 11050942, 15787060, 22101884, 27627355, 31574120, 44203768, 55254710, 110509420, 221018840]

約数ペア:

[(1, 221018840), (2, 110509420), (4, 55254710), (5, 44203768), (7, 31574120), (8, 27627355), (10, 22101884), (14, 15787060), (20, 11050942), (28, 7893530), (31, 7129640), (35, 6314824), (40, 5525471), (56, 3946765), (62, 3564820), (70, 3157412), (124, 1782410), (140, 1578706), (155, 1425928), (217, 1018520), (248, 891205), (280, 789353), (310, 712964), (434, 509260), (620, 356482), (868, 254630), (1085, 203704), (1240, 178241), (1736, 127315), (2170, 101852), (4340, 50926), (8680, 25463)]