18945580

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 41023584

約数和(自身を除く): 22078004

約数列:

[1, 2, 4, 5, 10, 20, 83, 101, 113, 166, 202, 226, 332, 404, 415, 452, 505, 565, 830, 1010, 1130, 1660, 2020, 2260, 8383, 9379, 11413, 16766, 18758, 22826, 33532, 37516, 41915, 45652, 46895, 57065, 83830, 93790, 114130, 167660, 187580, 228260, 947279, 1894558, 3789116, 4736395, 9472790, 18945580]

約数ペア:

[(1, 18945580), (2, 9472790), (4, 4736395), (5, 3789116), (10, 1894558), (20, 947279), (83, 228260), (101, 187580), (113, 167660), (166, 114130), (202, 93790), (226, 83830), (332, 57065), (404, 46895), (415, 45652), (452, 41915), (505, 37516), (565, 33532), (830, 22826), (1010, 18758), (1130, 16766), (1660, 11413), (2020, 9379), (2260, 8383)]