21254530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:343

約数の個数: 64

約数和(自身を含む): 45121536

約数和(自身を除く): 23867006

約数列:

[1, 2, 5, 10, 11, 22, 23, 31, 46, 55, 62, 110, 115, 155, 230, 253, 271, 310, 341, 506, 542, 682, 713, 1265, 1355, 1426, 1705, 2530, 2710, 2981, 3410, 3565, 5962, 6233, 7130, 7843, 8401, 12466, 14905, 15686, 16802, 29810, 31165, 39215, 42005, 62330, 68563, 78430, 84010, 92411, 137126, 184822, 193223, 342815, 386446, 462055, 685630, 924110, 966115, 1932230, 2125453, 4250906, 10627265, 21254530]

約数ペア:

[(1, 21254530), (2, 10627265), (5, 4250906), (10, 2125453), (11, 1932230), (22, 966115), (23, 924110), (31, 685630), (46, 462055), (55, 386446), (62, 342815), (110, 193223), (115, 184822), (155, 137126), (230, 92411), (253, 84010), (271, 78430), (310, 68563), (341, 62330), (506, 42005), (542, 39215), (682, 31165), (713, 29810), (1265, 16802), (1355, 15686), (1426, 14905), (1705, 12466), (2530, 8401), (2710, 7843), (2981, 7130), (3410, 6233), (3565, 5962)]