20129997550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1\times {\mathrm{1993}}^1$

素因数の和:2438

約数の個数: 96

約数和(自身を含む): 41435160480

約数和(自身を除く): 21305162930

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 130, 205, 325, 379, 410, 533, 650, 758, 1025, 1066, 1895, 1993, 2050, 2665, 3790, 3986, 4927, 5330, 9475, 9854, 9965, 13325, 15539, 18950, 19930, 24635, 25909, 26650, 31078, 49270, 49825, 51818, 77695, 81713, 99650, 123175, 129545, 155390, 163426, 202007, 246350, 259090, 388475, 404014, 408565, 647725, 755347, 776950, 817130, 1010035, 1062269, 1295450, 1510694, 2020070, 2042825, 2124538, 3776735, 4085650, 5050175, 5311345, 7553470, 9819511, 10100350, 10622690, 18883675, 19639022, 26556725, 30969227, 37767350, 49097555, 53113450, 61938454, 98195110, 154846135, 245487775, 309692270, 402599951, 490975550, 774230675, 805199902, 1548461350, 2012999755, 4025999510, 10064998775, 20129997550]

約数ペア:

[(1, 20129997550), (2, 10064998775), (5, 4025999510), (10, 2012999755), (13, 1548461350), (25, 805199902), (26, 774230675), (41, 490975550), (50, 402599951), (65, 309692270), (82, 245487775), (130, 154846135), (205, 98195110), (325, 61938454), (379, 53113450), (410, 49097555), (533, 37767350), (650, 30969227), (758, 26556725), (1025, 19639022), (1066, 18883675), (1895, 10622690), (1993, 10100350), (2050, 9819511), (2665, 7553470), (3790, 5311345), (3986, 5050175), (4927, 4085650), (5330, 3776735), (9475, 2124538), (9854, 2042825), (9965, 2020070), (13325, 1510694), (15539, 1295450), (18950, 1062269), (19930, 1010035), (24635, 817130), (25909, 776950), (26650, 755347), (31078, 647725), (49270, 408565), (49825, 404014), (51818, 388475), (77695, 259090), (81713, 246350), (99650, 202007), (123175, 163426), (129545, 155390)]