21397116

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7219}}^1$

素因数の和:7258

約数の個数: 48

約数和(自身を含む): 56604800

約数和(自身を除く): 35207684

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 494, 741, 988, 1482, 2964, 7219, 14438, 21657, 28876, 43314, 86628, 93847, 137161, 187694, 274322, 281541, 375388, 411483, 548644, 563082, 822966, 1126164, 1645932, 1783093, 3566186, 5349279, 7132372, 10698558, 21397116]

約数ペア:

[(1, 21397116), (2, 10698558), (3, 7132372), (4, 5349279), (6, 3566186), (12, 1783093), (13, 1645932), (19, 1126164), (26, 822966), (38, 563082), (39, 548644), (52, 411483), (57, 375388), (76, 281541), (78, 274322), (114, 187694), (156, 137161), (228, 93847), (247, 86628), (494, 43314), (741, 28876), (988, 21657), (1482, 14438), (2964, 7219)]