21167048

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 26525752

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 89, 124, 137, 178, 217, 248, 274, 356, 434, 548, 623, 712, 868, 959, 1096, 1246, 1736, 1918, 2492, 2759, 3836, 4247, 4984, 5518, 7672, 8494, 11036, 12193, 16988, 19313, 22072, 24386, 29729, 33976, 38626, 48772, 59458, 77252, 85351, 97544, 118916, 154504, 170702, 237832, 341404, 377983, 682808, 755966, 1511932, 2645881, 3023864, 5291762, 10583524, 21167048]

約数ペア:

[(1, 21167048), (2, 10583524), (4, 5291762), (7, 3023864), (8, 2645881), (14, 1511932), (28, 755966), (31, 682808), (56, 377983), (62, 341404), (89, 237832), (124, 170702), (137, 154504), (178, 118916), (217, 97544), (248, 85351), (274, 77252), (356, 59458), (434, 48772), (548, 38626), (623, 33976), (712, 29729), (868, 24386), (959, 22072), (1096, 19313), (1246, 16988), (1736, 12193), (1918, 11036), (2492, 8494), (2759, 7672), (3836, 5518), (4247, 4984)]