163968920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132233}}^1$

素因数の和:132275

約数の個数: 32

約数和(自身を含む): 380833920

約数和(自身を除く): 216865000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 132233, 264466, 528932, 661165, 1057864, 1322330, 2644660, 4099223, 5289320, 8198446, 16396892, 20496115, 32793784, 40992230, 81984460, 163968920]

約数ペア:

[(1, 163968920), (2, 81984460), (4, 40992230), (5, 32793784), (8, 20496115), (10, 16396892), (20, 8198446), (31, 5289320), (40, 4099223), (62, 2644660), (124, 1322330), (155, 1057864), (248, 661165), (310, 528932), (620, 264466), (1240, 132233)]