21658936

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 46922400

約数和(自身を除く): 25263464

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 97, 104, 113, 152, 194, 226, 247, 388, 452, 494, 776, 904, 988, 1261, 1469, 1843, 1976, 2147, 2522, 2938, 3686, 4294, 5044, 5876, 7372, 8588, 10088, 10961, 11752, 14744, 17176, 21922, 23959, 27911, 43844, 47918, 55822, 87688, 95836, 111644, 142493, 191672, 208259, 223288, 284986, 416518, 569972, 833036, 1139944, 1666072, 2707367, 5414734, 10829468, 21658936]

約数ペア:

[(1, 21658936), (2, 10829468), (4, 5414734), (8, 2707367), (13, 1666072), (19, 1139944), (26, 833036), (38, 569972), (52, 416518), (76, 284986), (97, 223288), (104, 208259), (113, 191672), (152, 142493), (194, 111644), (226, 95836), (247, 87688), (388, 55822), (452, 47918), (494, 43844), (776, 27911), (904, 23959), (988, 21922), (1261, 17176), (1469, 14744), (1843, 11752), (1976, 10961), (2147, 10088), (2522, 8588), (2938, 7372), (3686, 5876), (4294, 5044)]