20456904

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{379}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 55540800

約数和(自身を除く): 35083896

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 173, 312, 346, 379, 519, 692, 758, 1038, 1137, 1384, 1516, 2076, 2249, 2274, 3032, 4152, 4498, 4548, 4927, 6747, 8996, 9096, 9854, 13494, 14781, 17992, 19708, 26988, 29562, 39416, 53976, 59124, 65567, 118248, 131134, 196701, 262268, 393402, 524536, 786804, 852371, 1573608, 1704742, 2557113, 3409484, 5114226, 6818968, 10228452, 20456904]

約数ペア:

[(1, 20456904), (2, 10228452), (3, 6818968), (4, 5114226), (6, 3409484), (8, 2557113), (12, 1704742), (13, 1573608), (24, 852371), (26, 786804), (39, 524536), (52, 393402), (78, 262268), (104, 196701), (156, 131134), (173, 118248), (312, 65567), (346, 59124), (379, 53976), (519, 39416), (692, 29562), (758, 26988), (1038, 19708), (1137, 17992), (1384, 14781), (1516, 13494), (2076, 9854), (2249, 9096), (2274, 8996), (3032, 6747), (4152, 4927), (4498, 4548)]