21103808

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{967}}^1$

素因数の和:1021

約数の個数: 56

約数和(自身を含む): 47207424

約数和(自身を除く): 26103616

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 64, 88, 124, 176, 248, 341, 352, 496, 682, 704, 967, 992, 1364, 1934, 1984, 2728, 3868, 5456, 7736, 10637, 10912, 15472, 21274, 21824, 29977, 30944, 42548, 59954, 61888, 85096, 119908, 170192, 239816, 329747, 340384, 479632, 659494, 680768, 959264, 1318988, 1918528, 2637976, 5275952, 10551904, 21103808]

約数ペア:

[(1, 21103808), (2, 10551904), (4, 5275952), (8, 2637976), (11, 1918528), (16, 1318988), (22, 959264), (31, 680768), (32, 659494), (44, 479632), (62, 340384), (64, 329747), (88, 239816), (124, 170192), (176, 119908), (248, 85096), (341, 61888), (352, 59954), (496, 42548), (682, 30944), (704, 29977), (967, 21824), (992, 21274), (1364, 15472), (1934, 10912), (1984, 10637), (2728, 7736), (3868, 5456)]