205915390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{1657}}^1$

素因数の和:1741

約数の個数: 48

約数和(自身を含む): 403132752

約数和(自身を除く): 197217362

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 289, 430, 578, 731, 1445, 1462, 1657, 2890, 3314, 3655, 7310, 8285, 12427, 16570, 24854, 28169, 56338, 62135, 71251, 124270, 140845, 142502, 281690, 356255, 478873, 712510, 957746, 1211267, 2394365, 2422534, 4788730, 6056335, 12112670, 20591539, 41183078, 102957695, 205915390]

約数ペア:

[(1, 205915390), (2, 102957695), (5, 41183078), (10, 20591539), (17, 12112670), (34, 6056335), (43, 4788730), (85, 2422534), (86, 2394365), (170, 1211267), (215, 957746), (289, 712510), (430, 478873), (578, 356255), (731, 281690), (1445, 142502), (1462, 140845), (1657, 124270), (2890, 71251), (3314, 62135), (3655, 56338), (7310, 28169), (8285, 24854), (12427, 16570)]