18978804

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{379}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 33306156

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 107, 117, 156, 214, 234, 321, 379, 428, 468, 642, 758, 963, 1137, 1284, 1391, 1516, 1926, 2274, 2782, 3411, 3852, 4173, 4548, 4927, 5564, 6822, 8346, 9854, 12519, 13644, 14781, 16692, 19708, 25038, 29562, 40553, 44343, 50076, 59124, 81106, 88686, 121659, 162212, 177372, 243318, 364977, 486636, 527189, 729954, 1054378, 1459908, 1581567, 2108756, 3163134, 4744701, 6326268, 9489402, 18978804]

約数ペア:

[(1, 18978804), (2, 9489402), (3, 6326268), (4, 4744701), (6, 3163134), (9, 2108756), (12, 1581567), (13, 1459908), (18, 1054378), (26, 729954), (36, 527189), (39, 486636), (52, 364977), (78, 243318), (107, 177372), (117, 162212), (156, 121659), (214, 88686), (234, 81106), (321, 59124), (379, 50076), (428, 44343), (468, 40553), (642, 29562), (758, 25038), (963, 19708), (1137, 16692), (1284, 14781), (1391, 13644), (1516, 12519), (1926, 9854), (2274, 8346), (2782, 6822), (3411, 5564), (3852, 4927), (4173, 4548)]