1628365520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{656599}}^1$

素因数の和:656643

約数の個数: 40

約数和(自身を含む): 3908083200

約数和(自身を除く): 2279717680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 656599, 1313198, 2626396, 3282995, 5252792, 6565990, 10505584, 13131980, 20354569, 26263960, 40709138, 52527920, 81418276, 101772845, 162836552, 203545690, 325673104, 407091380, 814182760, 1628365520]

約数ペア:

[(1, 1628365520), (2, 814182760), (4, 407091380), (5, 325673104), (8, 203545690), (10, 162836552), (16, 101772845), (20, 81418276), (31, 52527920), (40, 40709138), (62, 26263960), (80, 20354569), (124, 13131980), (155, 10505584), (248, 6565990), (310, 5252792), (496, 3282995), (620, 2626396), (1240, 1313198), (2480, 656599)]