21377500

素因数分解:

$2^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{503}}^1$

素因数の和:544

約数の個数: 60

約数和(自身を含む): 49596624

約数和(自身を除く): 28219124

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 503, 625, 850, 1006, 1250, 1700, 2012, 2125, 2500, 2515, 4250, 5030, 8500, 8551, 10060, 10625, 12575, 17102, 21250, 25150, 34204, 42500, 42755, 50300, 62875, 85510, 125750, 171020, 213775, 251500, 314375, 427550, 628750, 855100, 1068875, 1257500, 2137750, 4275500, 5344375, 10688750, 21377500]

約数ペア:

[(1, 21377500), (2, 10688750), (4, 5344375), (5, 4275500), (10, 2137750), (17, 1257500), (20, 1068875), (25, 855100), (34, 628750), (50, 427550), (68, 314375), (85, 251500), (100, 213775), (125, 171020), (170, 125750), (250, 85510), (340, 62875), (425, 50300), (500, 42755), (503, 42500), (625, 34204), (850, 25150), (1006, 21250), (1250, 17102), (1700, 12575), (2012, 10625), (2125, 10060), (2500, 8551), (2515, 8500), (4250, 5030)]