19216700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 44111760

約数和(自身を除く): 24895060

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 43, 50, 82, 86, 100, 109, 164, 172, 205, 215, 218, 410, 430, 436, 545, 820, 860, 1025, 1075, 1090, 1763, 2050, 2150, 2180, 2725, 3526, 4100, 4300, 4469, 4687, 5450, 7052, 8815, 8938, 9374, 10900, 17630, 17876, 18748, 22345, 23435, 35260, 44075, 44690, 46870, 88150, 89380, 93740, 111725, 117175, 176300, 192167, 223450, 234350, 384334, 446900, 468700, 768668, 960835, 1921670, 3843340, 4804175, 9608350, 19216700]

約数ペア:

[(1, 19216700), (2, 9608350), (4, 4804175), (5, 3843340), (10, 1921670), (20, 960835), (25, 768668), (41, 468700), (43, 446900), (50, 384334), (82, 234350), (86, 223450), (100, 192167), (109, 176300), (164, 117175), (172, 111725), (205, 93740), (215, 89380), (218, 88150), (410, 46870), (430, 44690), (436, 44075), (545, 35260), (820, 23435), (860, 22345), (1025, 18748), (1075, 17876), (1090, 17630), (1763, 10900), (2050, 9374), (2150, 8938), (2180, 8815), (2725, 7052), (3526, 5450), (4100, 4687), (4300, 4469)]