20587970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21989950

約数列:

[1, 2, 5, 10, 13, 26, 29, 43, 58, 65, 86, 127, 130, 145, 215, 254, 290, 377, 430, 559, 635, 754, 1118, 1247, 1270, 1651, 1885, 2494, 2795, 3302, 3683, 3770, 5461, 5590, 6235, 7366, 8255, 10922, 12470, 16211, 16510, 18415, 27305, 32422, 36830, 47879, 54610, 70993, 81055, 95758, 141986, 158369, 162110, 239395, 316738, 354965, 478790, 709930, 791845, 1583690, 2058797, 4117594, 10293985, 20587970]

約数ペア:

[(1, 20587970), (2, 10293985), (5, 4117594), (10, 2058797), (13, 1583690), (26, 791845), (29, 709930), (43, 478790), (58, 354965), (65, 316738), (86, 239395), (127, 162110), (130, 158369), (145, 141986), (215, 95758), (254, 81055), (290, 70993), (377, 54610), (430, 47879), (559, 36830), (635, 32422), (754, 27305), (1118, 18415), (1247, 16510), (1270, 16211), (1651, 12470), (1885, 10922), (2494, 8255), (2795, 7366), (3302, 6235), (3683, 5590), (3770, 5461)]