218837680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{88241}}^1$

素因数の和:88285

約数の個数: 40

約数和(自身を含む): 525216384

約数和(自身を除く): 306378704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 88241, 176482, 352964, 441205, 705928, 882410, 1411856, 1764820, 2735471, 3529640, 5470942, 7059280, 10941884, 13677355, 21883768, 27354710, 43767536, 54709420, 109418840, 218837680]

約数ペア:

[(1, 218837680), (2, 109418840), (4, 54709420), (5, 43767536), (8, 27354710), (10, 21883768), (16, 13677355), (20, 10941884), (31, 7059280), (40, 5470942), (62, 3529640), (80, 2735471), (124, 1764820), (155, 1411856), (248, 882410), (310, 705928), (496, 441205), (620, 352964), (1240, 176482), (2480, 88241)]