201820220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{2039}}^1$

素因数の和:2163

約数の個数: 72

約数和(自身を含む): 498143520

約数和(自身を除く): 296323300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 101, 140, 196, 202, 245, 404, 490, 505, 707, 980, 1010, 1414, 2020, 2039, 2828, 3535, 4078, 4949, 7070, 8156, 9898, 10195, 14140, 14273, 19796, 20390, 24745, 28546, 40780, 49490, 57092, 71365, 98980, 99911, 142730, 199822, 205939, 285460, 399644, 411878, 499555, 823756, 999110, 1029695, 1441573, 1998220, 2059390, 2883146, 4118780, 5766292, 7207865, 10091011, 14415730, 20182022, 28831460, 40364044, 50455055, 100910110, 201820220]

約数ペア:

[(1, 201820220), (2, 100910110), (4, 50455055), (5, 40364044), (7, 28831460), (10, 20182022), (14, 14415730), (20, 10091011), (28, 7207865), (35, 5766292), (49, 4118780), (70, 2883146), (98, 2059390), (101, 1998220), (140, 1441573), (196, 1029695), (202, 999110), (245, 823756), (404, 499555), (490, 411878), (505, 399644), (707, 285460), (980, 205939), (1010, 199822), (1414, 142730), (2020, 99911), (2039, 98980), (2828, 71365), (3535, 57092), (4078, 49490), (4949, 40780), (7070, 28546), (8156, 24745), (9898, 20390), (10195, 19796), (14140, 14273)]