21653996

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 96

約数和(自身を含む): 51179520

約数和(自身を除く): 29525524

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 31, 38, 52, 62, 76, 91, 101, 124, 133, 182, 202, 217, 247, 266, 364, 403, 404, 434, 494, 532, 589, 707, 806, 868, 988, 1178, 1313, 1414, 1612, 1729, 1919, 2356, 2626, 2821, 2828, 3131, 3458, 3838, 4123, 5252, 5642, 6262, 6916, 7657, 7676, 8246, 9191, 11284, 12524, 13433, 15314, 16492, 18382, 21917, 24947, 26866, 30628, 36764, 40703, 43834, 49894, 53599, 53732, 59489, 81406, 87668, 99788, 107198, 118978, 162812, 174629, 214396, 237956, 284921, 349258, 416423, 569842, 698516, 773357, 832846, 1139684, 1546714, 1665692, 3093428, 5413499, 10826998, 21653996]

約数ペア:

[(1, 21653996), (2, 10826998), (4, 5413499), (7, 3093428), (13, 1665692), (14, 1546714), (19, 1139684), (26, 832846), (28, 773357), (31, 698516), (38, 569842), (52, 416423), (62, 349258), (76, 284921), (91, 237956), (101, 214396), (124, 174629), (133, 162812), (182, 118978), (202, 107198), (217, 99788), (247, 87668), (266, 81406), (364, 59489), (403, 53732), (404, 53599), (434, 49894), (494, 43834), (532, 40703), (589, 36764), (707, 30628), (806, 26866), (868, 24947), (988, 21917), (1178, 18382), (1313, 16492), (1414, 15314), (1612, 13433), (1729, 12524), (1919, 11284), (2356, 9191), (2626, 8246), (2821, 7676), (2828, 7657), (3131, 6916), (3458, 6262), (3838, 5642), (4123, 5252)]