19719960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12641}}^1$

素因数の和:12668

約数の個数: 64

約数和(自身を含む): 63715680

約数和(自身を除く): 43995720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12641, 25282, 37923, 50564, 63205, 75846, 101128, 126410, 151692, 164333, 189615, 252820, 303384, 328666, 379230, 492999, 505640, 657332, 758460, 821665, 985998, 1314664, 1516920, 1643330, 1971996, 2464995, 3286660, 3943992, 4929990, 6573320, 9859980, 19719960]

約数ペア:

[(1, 19719960), (2, 9859980), (3, 6573320), (4, 4929990), (5, 3943992), (6, 3286660), (8, 2464995), (10, 1971996), (12, 1643330), (13, 1516920), (15, 1314664), (20, 985998), (24, 821665), (26, 758460), (30, 657332), (39, 505640), (40, 492999), (52, 379230), (60, 328666), (65, 303384), (78, 252820), (104, 189615), (120, 164333), (130, 151692), (156, 126410), (195, 101128), (260, 75846), (312, 63205), (390, 50564), (520, 37923), (780, 25282), (1560, 12641)]