18611649

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 32497920

約数和(自身を除く): 13886271

約数列:

[1, 3, 7, 9, 21, 29, 61, 63, 87, 167, 183, 203, 261, 427, 501, 549, 609, 1169, 1281, 1503, 1769, 1827, 3507, 3843, 4843, 5307, 10187, 10521, 12383, 14529, 15921, 30561, 33901, 37149, 43587, 71309, 91683, 101703, 111447, 213927, 295423, 305109, 641781, 886269, 2067961, 2658807, 6203883, 18611649]

約数ペア:

[(1, 18611649), (3, 6203883), (7, 2658807), (9, 2067961), (21, 886269), (29, 641781), (61, 305109), (63, 295423), (87, 213927), (167, 111447), (183, 101703), (203, 91683), (261, 71309), (427, 43587), (501, 37149), (549, 33901), (609, 30561), (1169, 15921), (1281, 14529), (1503, 12383), (1769, 10521), (1827, 10187), (3507, 5307), (3843, 4843)]