20379220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^2$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 43685460

約数和(自身を除く): 23306240

約数列:

[1, 2, 4, 5, 10, 20, 89, 107, 178, 214, 356, 428, 445, 535, 890, 1070, 1780, 2140, 9523, 11449, 19046, 22898, 38092, 45796, 47615, 57245, 95230, 114490, 190460, 228980, 1018961, 2037922, 4075844, 5094805, 10189610, 20379220]

約数ペア:

[(1, 20379220), (2, 10189610), (4, 5094805), (5, 4075844), (10, 2037922), (20, 1018961), (89, 228980), (107, 190460), (178, 114490), (214, 95230), (356, 57245), (428, 47615), (445, 45796), (535, 38092), (890, 22898), (1070, 19046), (1780, 11449), (2140, 9523)]