206821490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 409546368

約数和(自身を除く): 202724878

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 131, 170, 185, 251, 262, 370, 502, 629, 655, 1255, 1258, 1310, 2227, 2510, 3145, 4267, 4454, 4847, 6290, 8534, 9287, 9694, 11135, 18574, 21335, 22270, 24235, 32881, 42670, 46435, 48470, 65762, 82399, 92870, 157879, 164405, 164798, 315758, 328810, 411995, 558977, 789395, 823990, 1117954, 1216597, 1578790, 2433194, 2794885, 5589770, 6082985, 12165970, 20682149, 41364298, 103410745, 206821490]

約数ペア:

[(1, 206821490), (2, 103410745), (5, 41364298), (10, 20682149), (17, 12165970), (34, 6082985), (37, 5589770), (74, 2794885), (85, 2433194), (131, 1578790), (170, 1216597), (185, 1117954), (251, 823990), (262, 789395), (370, 558977), (502, 411995), (629, 328810), (655, 315758), (1255, 164798), (1258, 164405), (1310, 157879), (2227, 92870), (2510, 82399), (3145, 65762), (4267, 48470), (4454, 46435), (4847, 42670), (6290, 32881), (8534, 24235), (9287, 22270), (9694, 21335), (11135, 18574)]