128209540

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 274083264

約数和(自身を除く): 145873724

約数列:

[1, 2, 4, 5, 10, 20, 107, 181, 214, 331, 362, 428, 535, 662, 724, 905, 1070, 1324, 1655, 1810, 2140, 3310, 3620, 6620, 19367, 35417, 38734, 59911, 70834, 77468, 96835, 119822, 141668, 177085, 193670, 239644, 299555, 354170, 387340, 599110, 708340, 1198220, 6410477, 12820954, 25641908, 32052385, 64104770, 128209540]

約数ペア:

[(1, 128209540), (2, 64104770), (4, 32052385), (5, 25641908), (10, 12820954), (20, 6410477), (107, 1198220), (181, 708340), (214, 599110), (331, 387340), (362, 354170), (428, 299555), (535, 239644), (662, 193670), (724, 177085), (905, 141668), (1070, 119822), (1324, 96835), (1655, 77468), (1810, 70834), (2140, 59911), (3310, 38734), (3620, 35417), (6620, 19367)]