20520450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1520

約数の個数: 72

約数和(自身を含む): 56948736

約数和(自身を除く): 36428286

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 31, 45, 50, 62, 75, 90, 93, 150, 155, 186, 225, 279, 310, 450, 465, 558, 775, 930, 1395, 1471, 1550, 2325, 2790, 2942, 4413, 4650, 6975, 7355, 8826, 13239, 13950, 14710, 22065, 26478, 36775, 44130, 45601, 66195, 73550, 91202, 110325, 132390, 136803, 220650, 228005, 273606, 330975, 410409, 456010, 661950, 684015, 820818, 1140025, 1368030, 2052045, 2280050, 3420075, 4104090, 6840150, 10260225, 20520450]

約数ペア:

[(1, 20520450), (2, 10260225), (3, 6840150), (5, 4104090), (6, 3420075), (9, 2280050), (10, 2052045), (15, 1368030), (18, 1140025), (25, 820818), (30, 684015), (31, 661950), (45, 456010), (50, 410409), (62, 330975), (75, 273606), (90, 228005), (93, 220650), (150, 136803), (155, 132390), (186, 110325), (225, 91202), (279, 73550), (310, 66195), (450, 45601), (465, 44130), (558, 36775), (775, 26478), (930, 22065), (1395, 14710), (1471, 13950), (1550, 13239), (2325, 8826), (2790, 7355), (2942, 6975), (4413, 4650)]