18472779

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 30370032

約数和(自身を除く): 11897253

約数列:

[1, 3, 9, 13, 27, 39, 53, 81, 117, 159, 331, 351, 477, 689, 993, 1053, 1431, 2067, 2979, 4293, 4303, 6201, 8937, 12909, 17543, 18603, 26811, 38727, 52629, 55809, 116181, 157887, 228059, 348543, 473661, 684177, 1420983, 2052531, 6157593, 18472779]

約数ペア:

[(1, 18472779), (3, 6157593), (9, 2052531), (13, 1420983), (27, 684177), (39, 473661), (53, 348543), (81, 228059), (117, 157887), (159, 116181), (331, 55809), (351, 52629), (477, 38727), (689, 26811), (993, 18603), (1053, 17543), (1431, 12909), (2067, 8937), (2979, 6201), (4293, 4303)]