18540580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 22948700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 380, 388, 485, 503, 970, 1006, 1843, 1940, 2012, 2515, 3686, 5030, 7372, 9215, 9557, 10060, 18430, 19114, 36860, 38228, 47785, 48791, 95570, 97582, 191140, 195164, 243955, 487910, 927029, 975820, 1854058, 3708116, 4635145, 9270290, 18540580]

約数ペア:

[(1, 18540580), (2, 9270290), (4, 4635145), (5, 3708116), (10, 1854058), (19, 975820), (20, 927029), (38, 487910), (76, 243955), (95, 195164), (97, 191140), (190, 97582), (194, 95570), (380, 48791), (388, 47785), (485, 38228), (503, 36860), (970, 19114), (1006, 18430), (1843, 10060), (1940, 9557), (2012, 9215), (2515, 7372), (3686, 5030)]