20876175

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 40080768

約数和(自身を除く): 19204593

約数列:

[1, 3, 5, 9, 15, 25, 31, 41, 45, 73, 75, 93, 123, 155, 205, 219, 225, 279, 365, 369, 465, 615, 657, 775, 1025, 1095, 1271, 1395, 1825, 1845, 2263, 2325, 2993, 3075, 3285, 3813, 5475, 6355, 6789, 6975, 8979, 9225, 11315, 11439, 14965, 16425, 19065, 20367, 26937, 31775, 33945, 44895, 56575, 57195, 74825, 92783, 95325, 101835, 134685, 169725, 224475, 278349, 285975, 463915, 509175, 673425, 835047, 1391745, 2319575, 4175235, 6958725, 20876175]

約数ペア:

[(1, 20876175), (3, 6958725), (5, 4175235), (9, 2319575), (15, 1391745), (25, 835047), (31, 673425), (41, 509175), (45, 463915), (73, 285975), (75, 278349), (93, 224475), (123, 169725), (155, 134685), (205, 101835), (219, 95325), (225, 92783), (279, 74825), (365, 57195), (369, 56575), (465, 44895), (615, 33945), (657, 31775), (775, 26937), (1025, 20367), (1095, 19065), (1271, 16425), (1395, 14965), (1825, 11439), (1845, 11315), (2263, 9225), (2325, 8979), (2993, 6975), (3075, 6789), (3285, 6355), (3813, 5475)]