20364890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 27898150

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 49, 65, 70, 91, 98, 115, 130, 139, 161, 182, 230, 245, 278, 299, 322, 455, 490, 598, 637, 695, 805, 910, 973, 1127, 1274, 1390, 1495, 1610, 1807, 1946, 2093, 2254, 2990, 3185, 3197, 3614, 4186, 4865, 5635, 6370, 6394, 6811, 9035, 9730, 10465, 11270, 12649, 13622, 14651, 15985, 18070, 20930, 22379, 25298, 29302, 31970, 34055, 41561, 44758, 63245, 68110, 73255, 83122, 88543, 111895, 126490, 146510, 156653, 177086, 207805, 223790, 290927, 313306, 415610, 442715, 581854, 783265, 885430, 1454635, 1566530, 2036489, 2909270, 4072978, 10182445, 20364890]

約数ペア:

[(1, 20364890), (2, 10182445), (5, 4072978), (7, 2909270), (10, 2036489), (13, 1566530), (14, 1454635), (23, 885430), (26, 783265), (35, 581854), (46, 442715), (49, 415610), (65, 313306), (70, 290927), (91, 223790), (98, 207805), (115, 177086), (130, 156653), (139, 146510), (161, 126490), (182, 111895), (230, 88543), (245, 83122), (278, 73255), (299, 68110), (322, 63245), (455, 44758), (490, 41561), (598, 34055), (637, 31970), (695, 29302), (805, 25298), (910, 22379), (973, 20930), (1127, 18070), (1274, 15985), (1390, 14651), (1495, 13622), (1610, 12649), (1807, 11270), (1946, 10465), (2093, 9730), (2254, 9035), (2990, 6811), (3185, 6394), (3197, 6370), (3614, 5635), (4186, 4865)]