20482580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 44413824

約数和(自身を除く): 23931244

約数列:

[1, 2, 4, 5, 10, 20, 61, 103, 122, 163, 206, 244, 305, 326, 412, 515, 610, 652, 815, 1030, 1220, 1630, 2060, 3260, 6283, 9943, 12566, 16789, 19886, 25132, 31415, 33578, 39772, 49715, 62830, 67156, 83945, 99430, 125660, 167890, 198860, 335780, 1024129, 2048258, 4096516, 5120645, 10241290, 20482580]

約数ペア:

[(1, 20482580), (2, 10241290), (4, 5120645), (5, 4096516), (10, 2048258), (20, 1024129), (61, 335780), (103, 198860), (122, 167890), (163, 125660), (206, 99430), (244, 83945), (305, 67156), (326, 62830), (412, 49715), (515, 39772), (610, 33578), (652, 31415), (815, 25132), (1030, 19886), (1220, 16789), (1630, 12566), (2060, 9943), (3260, 6283)]