21021810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 53066880

約数和(自身を除く): 32045070

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 73, 87, 145, 146, 174, 219, 290, 331, 365, 435, 438, 662, 730, 870, 993, 1095, 1655, 1986, 2117, 2190, 3310, 4234, 4965, 6351, 9599, 9930, 10585, 12702, 19198, 21170, 24163, 28797, 31755, 47995, 48326, 57594, 63510, 72489, 95990, 120815, 143985, 144978, 241630, 287970, 362445, 700727, 724890, 1401454, 2102181, 3503635, 4204362, 7007270, 10510905, 21021810]

約数ペア:

[(1, 21021810), (2, 10510905), (3, 7007270), (5, 4204362), (6, 3503635), (10, 2102181), (15, 1401454), (29, 724890), (30, 700727), (58, 362445), (73, 287970), (87, 241630), (145, 144978), (146, 143985), (174, 120815), (219, 95990), (290, 72489), (331, 63510), (365, 57594), (435, 48326), (438, 47995), (662, 31755), (730, 28797), (870, 24163), (993, 21170), (1095, 19198), (1655, 12702), (1986, 10585), (2117, 9930), (2190, 9599), (3310, 6351), (4234, 4965)]