20123781345

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{16747}}^1$

素因数の和:16833

約数の個数: 96

約数和(自身を含む): 38625979392

約数和(自身を除く): 18502198047

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 81, 115, 129, 135, 207, 215, 243, 345, 387, 405, 621, 645, 989, 1035, 1161, 1215, 1863, 1935, 2967, 3105, 3483, 4945, 5589, 5805, 8901, 9315, 10449, 14835, 16747, 17415, 26703, 27945, 44505, 50241, 52245, 80109, 83735, 133515, 150723, 240327, 251205, 385181, 400545, 452169, 720121, 753615, 1155543, 1201635, 1356507, 1925905, 2160363, 2260845, 3466629, 3600605, 4069521, 5777715, 6481089, 6782535, 10399887, 10801815, 16562783, 17333145, 19443267, 20347605, 31199661, 32405445, 49688349, 51999435, 58329801, 82813915, 93598983, 97216335, 149065047, 155998305, 174989403, 248441745, 291649005, 447195141, 467994915, 745325235, 874947015, 1341585423, 2235975705, 4024756269, 6707927115, 20123781345]

約数ペア:

[(1, 20123781345), (3, 6707927115), (5, 4024756269), (9, 2235975705), (15, 1341585423), (23, 874947015), (27, 745325235), (43, 467994915), (45, 447195141), (69, 291649005), (81, 248441745), (115, 174989403), (129, 155998305), (135, 149065047), (207, 97216335), (215, 93598983), (243, 82813915), (345, 58329801), (387, 51999435), (405, 49688349), (621, 32405445), (645, 31199661), (989, 20347605), (1035, 19443267), (1161, 17333145), (1215, 16562783), (1863, 10801815), (1935, 10399887), (2967, 6782535), (3105, 6481089), (3483, 5777715), (4945, 4069521), (5589, 3600605), (5805, 3466629), (8901, 2260845), (9315, 2160363), (10449, 1925905), (14835, 1356507), (16747, 1201635), (17415, 1155543), (26703, 753615), (27945, 720121), (44505, 452169), (50241, 400545), (52245, 385181), (80109, 251205), (83735, 240327), (133515, 150723)]