21545744

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:420

約数の個数: 60

約数和(自身を含む): 47496960

約数和(自身を除く): 25951216

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 121, 124, 176, 242, 248, 341, 359, 484, 496, 682, 718, 968, 1364, 1436, 1936, 2728, 2872, 3751, 3949, 5456, 5744, 7502, 7898, 11129, 15004, 15796, 22258, 30008, 31592, 43439, 44516, 60016, 63184, 86878, 89032, 122419, 173756, 178064, 244838, 347512, 489676, 695024, 979352, 1346609, 1958704, 2693218, 5386436, 10772872, 21545744]

約数ペア:

[(1, 21545744), (2, 10772872), (4, 5386436), (8, 2693218), (11, 1958704), (16, 1346609), (22, 979352), (31, 695024), (44, 489676), (62, 347512), (88, 244838), (121, 178064), (124, 173756), (176, 122419), (242, 89032), (248, 86878), (341, 63184), (359, 60016), (484, 44516), (496, 43439), (682, 31592), (718, 30008), (968, 22258), (1364, 15796), (1436, 15004), (1936, 11129), (2728, 7898), (2872, 7502), (3751, 5744), (3949, 5456)]