18403884

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 48484800

約数和(自身を除く): 30080916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 73, 94, 141, 146, 149, 188, 219, 282, 292, 298, 423, 438, 447, 564, 596, 657, 846, 876, 894, 1314, 1341, 1692, 1788, 2628, 2682, 3431, 5364, 6862, 7003, 10293, 10877, 13724, 14006, 20586, 21009, 21754, 28012, 30879, 32631, 41172, 42018, 43508, 61758, 63027, 65262, 84036, 97893, 123516, 126054, 130524, 195786, 252108, 391572, 511219, 1022438, 1533657, 2044876, 3067314, 4600971, 6134628, 9201942, 18403884]

約数ペア:

[(1, 18403884), (2, 9201942), (3, 6134628), (4, 4600971), (6, 3067314), (9, 2044876), (12, 1533657), (18, 1022438), (36, 511219), (47, 391572), (73, 252108), (94, 195786), (141, 130524), (146, 126054), (149, 123516), (188, 97893), (219, 84036), (282, 65262), (292, 63027), (298, 61758), (423, 43508), (438, 42018), (447, 41172), (564, 32631), (596, 30879), (657, 28012), (846, 21754), (876, 21009), (894, 20586), (1314, 14006), (1341, 13724), (1692, 10877), (1788, 10293), (2628, 7003), (2682, 6862), (3431, 5364)]