19510390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 38416752

約数和(自身を除く): 18906362

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 157, 170, 215, 289, 314, 430, 578, 731, 785, 1445, 1462, 1570, 2669, 2890, 3655, 5338, 6751, 7310, 12427, 13345, 13502, 24854, 26690, 33755, 45373, 62135, 67510, 90746, 114767, 124270, 226865, 229534, 453730, 573835, 1147670, 1951039, 3902078, 9755195, 19510390]

約数ペア:

[(1, 19510390), (2, 9755195), (5, 3902078), (10, 1951039), (17, 1147670), (34, 573835), (43, 453730), (85, 229534), (86, 226865), (157, 124270), (170, 114767), (215, 90746), (289, 67510), (314, 62135), (430, 45373), (578, 33755), (731, 26690), (785, 24854), (1445, 13502), (1462, 13345), (1570, 12427), (2669, 7310), (2890, 6751), (3655, 5338)]