21937810

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:450

約数の個数: 32

約数和(自身を含む): 40538880

約数和(自身を除く): 18601070

約数列:

[1, 2, 5, 10, 67, 134, 137, 239, 274, 335, 478, 670, 685, 1195, 1370, 2390, 9179, 16013, 18358, 32026, 32743, 45895, 65486, 80065, 91790, 160130, 163715, 327430, 2193781, 4387562, 10968905, 21937810]

約数ペア:

[(1, 21937810), (2, 10968905), (5, 4387562), (10, 2193781), (67, 327430), (134, 163715), (137, 160130), (239, 91790), (274, 80065), (335, 65486), (478, 45895), (670, 32743), (685, 32026), (1195, 18358), (1370, 16013), (2390, 9179)]