12790480

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2621}}^1$

素因数の和:2695

約数の個数: 40

約数和(自身を含む): 30236904

約数和(自身を除く): 17446424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 2621, 4880, 5242, 10484, 13105, 20968, 26210, 41936, 52420, 104840, 159881, 209680, 319762, 639524, 799405, 1279048, 1598810, 2558096, 3197620, 6395240, 12790480]

約数ペア:

[(1, 12790480), (2, 6395240), (4, 3197620), (5, 2558096), (8, 1598810), (10, 1279048), (16, 799405), (20, 639524), (40, 319762), (61, 209680), (80, 159881), (122, 104840), (244, 52420), (305, 41936), (488, 26210), (610, 20968), (976, 13105), (1220, 10484), (2440, 5242), (2621, 4880)]