129558920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{641}}^1$

素因数の和:846

約数の個数: 64

約数和(自身を含む): 303229440

約数和(自身を除く): 173670520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 163, 248, 310, 326, 620, 641, 652, 815, 1240, 1282, 1304, 1630, 2564, 3205, 3260, 5053, 5128, 6410, 6520, 10106, 12820, 19871, 20212, 25265, 25640, 39742, 40424, 50530, 79484, 99355, 101060, 104483, 158968, 198710, 202120, 208966, 397420, 417932, 522415, 794840, 835864, 1044830, 2089660, 3238973, 4179320, 6477946, 12955892, 16194865, 25911784, 32389730, 64779460, 129558920]

約数ペア:

[(1, 129558920), (2, 64779460), (4, 32389730), (5, 25911784), (8, 16194865), (10, 12955892), (20, 6477946), (31, 4179320), (40, 3238973), (62, 2089660), (124, 1044830), (155, 835864), (163, 794840), (248, 522415), (310, 417932), (326, 397420), (620, 208966), (641, 202120), (652, 198710), (815, 158968), (1240, 104483), (1282, 101060), (1304, 99355), (1630, 79484), (2564, 50530), (3205, 40424), (3260, 39742), (5053, 25640), (5128, 25265), (6410, 20212), (6520, 19871), (10106, 12820)]