20161821323

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 24310927872

約数和(自身を除く): 4149106549

約数列:

[1, 7, 31, 131, 137, 167, 217, 917, 959, 961, 1169, 4061, 4247, 5177, 6727, 17947, 21877, 22879, 28427, 29729, 36239, 125629, 125891, 131657, 153139, 160153, 160487, 556357, 678187, 709249, 881237, 921599, 1123409, 2997149, 3894499, 4747309, 4964743, 17247067, 20980043, 21023797, 21986719, 92911619, 120729469, 147166579, 153907033, 650381333, 2880260189, 20161821323]

約数ペア:

[(1, 20161821323), (7, 2880260189), (31, 650381333), (131, 153907033), (137, 147166579), (167, 120729469), (217, 92911619), (917, 21986719), (959, 21023797), (961, 20980043), (1169, 17247067), (4061, 4964743), (4247, 4747309), (5177, 3894499), (6727, 2997149), (17947, 1123409), (21877, 921599), (22879, 881237), (28427, 709249), (29729, 678187), (36239, 556357), (125629, 160487), (125891, 160153), (131657, 153139)]