20013080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1549}}^1$

素因数の和:1596

約数の個数: 64

約数和(自身を含む): 50220000

約数和(自身を除く): 30206920

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1549, 1615, 2584, 3098, 3230, 6196, 6460, 7745, 12392, 12920, 15490, 26333, 29431, 30980, 52666, 58862, 61960, 105332, 117724, 131665, 147155, 210664, 235448, 263330, 294310, 500327, 526660, 588620, 1000654, 1053320, 1177240, 2001308, 2501635, 4002616, 5003270, 10006540, 20013080]

約数ペア:

[(1, 20013080), (2, 10006540), (4, 5003270), (5, 4002616), (8, 2501635), (10, 2001308), (17, 1177240), (19, 1053320), (20, 1000654), (34, 588620), (38, 526660), (40, 500327), (68, 294310), (76, 263330), (85, 235448), (95, 210664), (136, 147155), (152, 131665), (170, 117724), (190, 105332), (323, 61960), (340, 58862), (380, 52666), (646, 30980), (680, 29431), (760, 26333), (1292, 15490), (1549, 12920), (1615, 12392), (2584, 7745), (3098, 6460), (3230, 6196)]