205121420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{313}}^1$

素因数の和:511

約数の個数: 96

約数和(自身を含む): 513171456

約数和(自身を除く): 308050036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 151, 155, 217, 302, 310, 313, 434, 604, 620, 626, 755, 868, 1057, 1085, 1252, 1510, 1565, 2114, 2170, 2191, 3020, 3130, 4228, 4340, 4382, 4681, 5285, 6260, 8764, 9362, 9703, 10570, 10955, 18724, 19406, 21140, 21910, 23405, 32767, 38812, 43820, 46810, 47263, 48515, 65534, 67921, 93620, 94526, 97030, 131068, 135842, 163835, 189052, 194060, 236315, 271684, 327670, 330841, 339605, 472630, 655340, 661682, 679210, 945260, 1323364, 1358420, 1465153, 1654205, 2930306, 3308410, 5860612, 6616820, 7325765, 10256071, 14651530, 20512142, 29303060, 41024284, 51280355, 102560710, 205121420]

約数ペア:

[(1, 205121420), (2, 102560710), (4, 51280355), (5, 41024284), (7, 29303060), (10, 20512142), (14, 14651530), (20, 10256071), (28, 7325765), (31, 6616820), (35, 5860612), (62, 3308410), (70, 2930306), (124, 1654205), (140, 1465153), (151, 1358420), (155, 1323364), (217, 945260), (302, 679210), (310, 661682), (313, 655340), (434, 472630), (604, 339605), (620, 330841), (626, 327670), (755, 271684), (868, 236315), (1057, 194060), (1085, 189052), (1252, 163835), (1510, 135842), (1565, 131068), (2114, 97030), (2170, 94526), (2191, 93620), (3020, 67921), (3130, 65534), (4228, 48515), (4340, 47263), (4382, 46810), (4681, 43820), (5285, 38812), (6260, 32767), (8764, 23405), (9362, 21910), (9703, 21140), (10570, 19406), (10955, 18724)]