81876730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 165166848

約数和(自身を除く): 83290118

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 97, 130, 151, 194, 215, 302, 430, 485, 559, 755, 970, 1118, 1261, 1510, 1963, 2522, 2795, 3926, 4171, 5590, 6305, 6493, 8342, 9815, 12610, 12986, 14647, 19630, 20855, 29294, 32465, 41710, 54223, 64930, 73235, 84409, 108446, 146470, 168818, 190411, 271115, 380822, 422045, 542230, 629821, 844090, 952055, 1259642, 1904110, 3149105, 6298210, 8187673, 16375346, 40938365, 81876730]

約数ペア:

[(1, 81876730), (2, 40938365), (5, 16375346), (10, 8187673), (13, 6298210), (26, 3149105), (43, 1904110), (65, 1259642), (86, 952055), (97, 844090), (130, 629821), (151, 542230), (194, 422045), (215, 380822), (302, 271115), (430, 190411), (485, 168818), (559, 146470), (755, 108446), (970, 84409), (1118, 73235), (1261, 64930), (1510, 54223), (1963, 41710), (2522, 32465), (2795, 29294), (3926, 20855), (4171, 19630), (5590, 14647), (6305, 12986), (6493, 12610), (8342, 9815)]