21856670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 45909504

約数和(自身を除く): 24052834

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 53, 55, 106, 110, 115, 163, 230, 253, 265, 326, 506, 530, 583, 815, 1166, 1219, 1265, 1630, 1793, 2438, 2530, 2915, 3586, 3749, 5830, 6095, 7498, 8639, 8965, 12190, 13409, 17278, 17930, 18745, 26818, 37490, 41239, 43195, 67045, 82478, 86390, 95029, 134090, 190058, 198697, 206195, 397394, 412390, 475145, 950290, 993485, 1986970, 2185667, 4371334, 10928335, 21856670]

約数ペア:

[(1, 21856670), (2, 10928335), (5, 4371334), (10, 2185667), (11, 1986970), (22, 993485), (23, 950290), (46, 475145), (53, 412390), (55, 397394), (106, 206195), (110, 198697), (115, 190058), (163, 134090), (230, 95029), (253, 86390), (265, 82478), (326, 67045), (506, 43195), (530, 41239), (583, 37490), (815, 26818), (1166, 18745), (1219, 17930), (1265, 17278), (1630, 13409), (1793, 12190), (2438, 8965), (2530, 8639), (2915, 7498), (3586, 6095), (3749, 5830)]