18839475

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 36263552

約数和(自身を除く): 17424077

約数列:

[1, 3, 5, 9, 15, 25, 31, 37, 45, 73, 75, 93, 111, 155, 185, 219, 225, 279, 333, 365, 465, 555, 657, 775, 925, 1095, 1147, 1395, 1665, 1825, 2263, 2325, 2701, 2775, 3285, 3441, 5475, 5735, 6789, 6975, 8103, 8325, 10323, 11315, 13505, 16425, 17205, 20367, 24309, 28675, 33945, 40515, 51615, 56575, 67525, 83731, 86025, 101835, 121545, 169725, 202575, 251193, 258075, 418655, 509175, 607725, 753579, 1255965, 2093275, 3767895, 6279825, 18839475]

約数ペア:

[(1, 18839475), (3, 6279825), (5, 3767895), (9, 2093275), (15, 1255965), (25, 753579), (31, 607725), (37, 509175), (45, 418655), (73, 258075), (75, 251193), (93, 202575), (111, 169725), (155, 121545), (185, 101835), (219, 86025), (225, 83731), (279, 67525), (333, 56575), (365, 51615), (465, 40515), (555, 33945), (657, 28675), (775, 24309), (925, 20367), (1095, 17205), (1147, 16425), (1395, 13505), (1665, 11315), (1825, 10323), (2263, 8325), (2325, 8103), (2701, 6975), (2775, 6789), (3285, 5735), (3441, 5475)]