21802330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 24387110

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 89, 110, 131, 170, 178, 187, 262, 374, 445, 655, 890, 935, 979, 1310, 1441, 1513, 1870, 1958, 2227, 2882, 3026, 4454, 4895, 7205, 7565, 9790, 11135, 11659, 14410, 15130, 16643, 22270, 23318, 24497, 33286, 48994, 58295, 83215, 116590, 122485, 128249, 166430, 198203, 244970, 256498, 396406, 641245, 991015, 1282490, 1982030, 2180233, 4360466, 10901165, 21802330]

約数ペア:

[(1, 21802330), (2, 10901165), (5, 4360466), (10, 2180233), (11, 1982030), (17, 1282490), (22, 991015), (34, 641245), (55, 396406), (85, 256498), (89, 244970), (110, 198203), (131, 166430), (170, 128249), (178, 122485), (187, 116590), (262, 83215), (374, 58295), (445, 48994), (655, 33286), (890, 24497), (935, 23318), (979, 22270), (1310, 16643), (1441, 15130), (1513, 14410), (1870, 11659), (1958, 11135), (2227, 9790), (2882, 7565), (3026, 7205), (4454, 4895)]