788494820

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1\times {\mathrm{1663}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 1678430208

約数和(自身を除く): 889935388

約数列:

[1, 2, 4, 5, 10, 20, 151, 157, 302, 314, 604, 628, 755, 785, 1510, 1570, 1663, 3020, 3140, 3326, 6652, 8315, 16630, 23707, 33260, 47414, 94828, 118535, 237070, 251113, 261091, 474140, 502226, 522182, 1004452, 1044364, 1255565, 1305455, 2511130, 2610910, 5022260, 5221820, 39424741, 78849482, 157698964, 197123705, 394247410, 788494820]

約数ペア:

[(1, 788494820), (2, 394247410), (4, 197123705), (5, 157698964), (10, 78849482), (20, 39424741), (151, 5221820), (157, 5022260), (302, 2610910), (314, 2511130), (604, 1305455), (628, 1255565), (755, 1044364), (785, 1004452), (1510, 522182), (1570, 502226), (1663, 474140), (3020, 261091), (3140, 251113), (3326, 237070), (6652, 118535), (8315, 94828), (16630, 47414), (23707, 33260)]