18240400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1520

約数の個数: 60

約数和(自身を含む): 45266944

約数和(自身を除く): 27026544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1471, 1550, 2480, 2942, 3100, 5884, 6200, 7355, 11768, 12400, 14710, 23536, 29420, 36775, 45601, 58840, 73550, 91202, 117680, 147100, 182404, 228005, 294200, 364808, 456010, 588400, 729616, 912020, 1140025, 1824040, 2280050, 3648080, 4560100, 9120200, 18240400]

約数ペア:

[(1, 18240400), (2, 9120200), (4, 4560100), (5, 3648080), (8, 2280050), (10, 1824040), (16, 1140025), (20, 912020), (25, 729616), (31, 588400), (40, 456010), (50, 364808), (62, 294200), (80, 228005), (100, 182404), (124, 147100), (155, 117680), (200, 91202), (248, 73550), (310, 58840), (400, 45601), (496, 36775), (620, 29420), (775, 23536), (1240, 14710), (1471, 12400), (1550, 11768), (2480, 7355), (2942, 6200), (3100, 5884)]