18740538

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 25496262

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 79, 138, 158, 191, 207, 237, 382, 414, 474, 573, 621, 711, 1146, 1242, 1422, 1719, 1817, 2133, 3438, 3634, 4266, 4393, 5157, 5451, 8786, 10314, 10902, 13179, 15089, 16353, 26358, 30178, 32706, 39537, 45267, 49059, 79074, 90534, 98118, 118611, 135801, 237222, 271602, 347047, 407403, 694094, 814806, 1041141, 2082282, 3123423, 6246846, 9370269, 18740538]

約数ペア:

[(1, 18740538), (2, 9370269), (3, 6246846), (6, 3123423), (9, 2082282), (18, 1041141), (23, 814806), (27, 694094), (46, 407403), (54, 347047), (69, 271602), (79, 237222), (138, 135801), (158, 118611), (191, 98118), (207, 90534), (237, 79074), (382, 49059), (414, 45267), (474, 39537), (573, 32706), (621, 30178), (711, 26358), (1146, 16353), (1242, 15089), (1422, 13179), (1719, 10902), (1817, 10314), (2133, 8786), (3438, 5451), (3634, 5157), (4266, 4393)]