21619648

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:701

約数の個数: 56

約数和(自身を含む): 46963584

約数和(自身を除く): 25343936

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 136, 248, 272, 496, 527, 544, 641, 992, 1054, 1088, 1282, 1984, 2108, 2564, 4216, 5128, 8432, 10256, 10897, 16864, 19871, 20512, 21794, 33728, 39742, 41024, 43588, 79484, 87176, 158968, 174352, 317936, 337807, 348704, 635872, 675614, 697408, 1271744, 1351228, 2702456, 5404912, 10809824, 21619648]

約数ペア:

[(1, 21619648), (2, 10809824), (4, 5404912), (8, 2702456), (16, 1351228), (17, 1271744), (31, 697408), (32, 675614), (34, 635872), (62, 348704), (64, 337807), (68, 317936), (124, 174352), (136, 158968), (248, 87176), (272, 79484), (496, 43588), (527, 41024), (544, 39742), (641, 33728), (992, 21794), (1054, 20512), (1088, 19871), (1282, 16864), (1984, 10897), (2108, 10256), (2564, 8432), (4216, 5128)]