21011552

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22534048

約数列:

[1, 2, 4, 8, 16, 31, 32, 59, 62, 118, 124, 236, 248, 359, 472, 496, 718, 944, 992, 1436, 1829, 1888, 2872, 3658, 5744, 7316, 11129, 11488, 14632, 21181, 22258, 29264, 42362, 44516, 58528, 84724, 89032, 169448, 178064, 338896, 356128, 656611, 677792, 1313222, 2626444, 5252888, 10505776, 21011552]

約数ペア:

[(1, 21011552), (2, 10505776), (4, 5252888), (8, 2626444), (16, 1313222), (31, 677792), (32, 656611), (59, 356128), (62, 338896), (118, 178064), (124, 169448), (236, 89032), (248, 84724), (359, 58528), (472, 44516), (496, 42362), (718, 29264), (944, 22258), (992, 21181), (1436, 14632), (1829, 11488), (1888, 11129), (2872, 7316), (3658, 5744)]