71504380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 162464400

約数和(自身を除く): 90960020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 139, 170, 178, 278, 289, 340, 356, 445, 556, 578, 695, 890, 1156, 1390, 1445, 1513, 1780, 2363, 2780, 2890, 3026, 4726, 5780, 6052, 7565, 9452, 11815, 12371, 15130, 23630, 24742, 25721, 30260, 40171, 47260, 49484, 51442, 61855, 80342, 102884, 123710, 128605, 160684, 200855, 210307, 247420, 257210, 401710, 420614, 514420, 803420, 841228, 1051535, 2103070, 3575219, 4206140, 7150438, 14300876, 17876095, 35752190, 71504380]

約数ペア:

[(1, 71504380), (2, 35752190), (4, 17876095), (5, 14300876), (10, 7150438), (17, 4206140), (20, 3575219), (34, 2103070), (68, 1051535), (85, 841228), (89, 803420), (139, 514420), (170, 420614), (178, 401710), (278, 257210), (289, 247420), (340, 210307), (356, 200855), (445, 160684), (556, 128605), (578, 123710), (695, 102884), (890, 80342), (1156, 61855), (1390, 51442), (1445, 49484), (1513, 47260), (1780, 40171), (2363, 30260), (2780, 25721), (2890, 24742), (3026, 23630), (4726, 15130), (5780, 12371), (6052, 11815), (7565, 9452)]