31001220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1097}}^1$

素因数の和:1269

約数の個数: 72

約数和(自身を含む): 94722264

約数和(自身を除く): 63721044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 785, 942, 1097, 1413, 1570, 1884, 2194, 2355, 2826, 3140, 3291, 4388, 4710, 5485, 5652, 6582, 7065, 9420, 9873, 10970, 13164, 14130, 16455, 19746, 21940, 28260, 32910, 39492, 49365, 65820, 98730, 172229, 197460, 344458, 516687, 688916, 861145, 1033374, 1550061, 1722290, 2066748, 2583435, 3100122, 3444580, 5166870, 6200244, 7750305, 10333740, 15500610, 31001220]

約数ペア:

[(1, 31001220), (2, 15500610), (3, 10333740), (4, 7750305), (5, 6200244), (6, 5166870), (9, 3444580), (10, 3100122), (12, 2583435), (15, 2066748), (18, 1722290), (20, 1550061), (30, 1033374), (36, 861145), (45, 688916), (60, 516687), (90, 344458), (157, 197460), (180, 172229), (314, 98730), (471, 65820), (628, 49365), (785, 39492), (942, 32910), (1097, 28260), (1413, 21940), (1570, 19746), (1884, 16455), (2194, 14130), (2355, 13164), (2826, 10970), (3140, 9873), (3291, 9420), (4388, 7065), (4710, 6582), (5485, 5652)]