21665930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 46569600

約数和(自身を除く): 24903670

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 109, 110, 130, 139, 143, 218, 278, 286, 545, 695, 715, 1090, 1199, 1390, 1417, 1430, 1529, 1807, 2398, 2834, 3058, 3614, 5995, 7085, 7645, 9035, 11990, 14170, 15151, 15290, 15587, 18070, 19877, 30302, 31174, 39754, 75755, 77935, 99385, 151510, 155870, 166661, 196963, 198770, 333322, 393926, 833305, 984815, 1666610, 1969630, 2166593, 4333186, 10832965, 21665930]

約数ペア:

[(1, 21665930), (2, 10832965), (5, 4333186), (10, 2166593), (11, 1969630), (13, 1666610), (22, 984815), (26, 833305), (55, 393926), (65, 333322), (109, 198770), (110, 196963), (130, 166661), (139, 155870), (143, 151510), (218, 99385), (278, 77935), (286, 75755), (545, 39754), (695, 31174), (715, 30302), (1090, 19877), (1199, 18070), (1390, 15587), (1417, 15290), (1430, 15151), (1529, 14170), (1807, 11990), (2398, 9035), (2834, 7645), (3058, 7085), (3614, 5995)]