128386958980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{326701}}^1$

素因数の和:327125

約数の個数: 72

約数和(自身を含む): 314414084376

約数和(自身を除く): 186027125396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 401, 490, 802, 980, 1604, 2005, 2807, 4010, 5614, 8020, 11228, 14035, 19649, 28070, 39298, 56140, 78596, 98245, 196490, 326701, 392980, 653402, 1306804, 1633505, 2286907, 3267010, 4573814, 6534020, 9147628, 11434535, 16008349, 22869070, 32016698, 45738140, 64033396, 80041745, 131007101, 160083490, 262014202, 320166980, 524028404, 655035505, 917049707, 1310071010, 1834099414, 2620142020, 3668198828, 4585248535, 6419347949, 9170497070, 12838695898, 18340994140, 25677391796, 32096739745, 64193479490, 128386958980]

約数ペア:

[(1, 128386958980), (2, 64193479490), (4, 32096739745), (5, 25677391796), (7, 18340994140), (10, 12838695898), (14, 9170497070), (20, 6419347949), (28, 4585248535), (35, 3668198828), (49, 2620142020), (70, 1834099414), (98, 1310071010), (140, 917049707), (196, 655035505), (245, 524028404), (401, 320166980), (490, 262014202), (802, 160083490), (980, 131007101), (1604, 80041745), (2005, 64033396), (2807, 45738140), (4010, 32016698), (5614, 22869070), (8020, 16008349), (11228, 11434535), (14035, 9147628), (19649, 6534020), (28070, 4573814), (39298, 3267010), (56140, 2286907), (78596, 1633505), (98245, 1306804), (196490, 653402), (326701, 392980)]