20898220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1321}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 50637888

約数和(自身を除く): 29739668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1321, 1582, 2260, 2642, 3164, 3955, 5284, 6605, 7910, 9247, 13210, 15820, 18494, 26420, 36988, 46235, 92470, 149273, 184940, 298546, 597092, 746365, 1044911, 1492730, 2089822, 2985460, 4179644, 5224555, 10449110, 20898220]

約数ペア:

[(1, 20898220), (2, 10449110), (4, 5224555), (5, 4179644), (7, 2985460), (10, 2089822), (14, 1492730), (20, 1044911), (28, 746365), (35, 597092), (70, 298546), (113, 184940), (140, 149273), (226, 92470), (452, 46235), (565, 36988), (791, 26420), (1130, 18494), (1321, 15820), (1582, 13210), (2260, 9247), (2642, 7910), (3164, 6605), (3955, 5284)]