19215440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 28995760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 142, 170, 199, 272, 284, 340, 355, 398, 568, 680, 710, 796, 995, 1136, 1207, 1360, 1420, 1592, 1990, 2414, 2840, 3184, 3383, 3980, 4828, 5680, 6035, 6766, 7960, 9656, 12070, 13532, 14129, 15920, 16915, 19312, 24140, 27064, 28258, 33830, 48280, 54128, 56516, 67660, 70645, 96560, 113032, 135320, 141290, 226064, 240193, 270640, 282580, 480386, 565160, 960772, 1130320, 1200965, 1921544, 2401930, 3843088, 4803860, 9607720, 19215440]

約数ペア:

[(1, 19215440), (2, 9607720), (4, 4803860), (5, 3843088), (8, 2401930), (10, 1921544), (16, 1200965), (17, 1130320), (20, 960772), (34, 565160), (40, 480386), (68, 282580), (71, 270640), (80, 240193), (85, 226064), (136, 141290), (142, 135320), (170, 113032), (199, 96560), (272, 70645), (284, 67660), (340, 56516), (355, 54128), (398, 48280), (568, 33830), (680, 28258), (710, 27064), (796, 24140), (995, 19312), (1136, 16915), (1207, 15920), (1360, 14129), (1420, 13532), (1592, 12070), (1990, 9656), (2414, 7960), (2840, 6766), (3184, 6035), (3383, 5680), (3980, 4828)]