19404640

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5273}}^1$

素因数の和:5311

約数の個数: 48

約数和(自身を含む): 47845728

約数和(自身を除く): 28441088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5273, 10546, 21092, 26365, 42184, 52730, 84368, 105460, 121279, 168736, 210920, 242558, 421840, 485116, 606395, 843680, 970232, 1212790, 1940464, 2425580, 3880928, 4851160, 9702320, 19404640]

約数ペア:

[(1, 19404640), (2, 9702320), (4, 4851160), (5, 3880928), (8, 2425580), (10, 1940464), (16, 1212790), (20, 970232), (23, 843680), (32, 606395), (40, 485116), (46, 421840), (80, 242558), (92, 210920), (115, 168736), (160, 121279), (184, 105460), (230, 84368), (368, 52730), (460, 42184), (736, 26365), (920, 21092), (1840, 10546), (3680, 5273)]