207720616

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 427204800

約数和(自身を除く): 219484184

約数列:

[1, 2, 4, 8, 19, 38, 43, 61, 76, 86, 122, 152, 172, 244, 344, 488, 521, 817, 1042, 1159, 1634, 2084, 2318, 2623, 3268, 4168, 4636, 5246, 6536, 9272, 9899, 10492, 19798, 20984, 22403, 31781, 39596, 44806, 49837, 63562, 79192, 89612, 99674, 127124, 179224, 199348, 254248, 398696, 425657, 603839, 851314, 1207678, 1366583, 1702628, 2415356, 2733166, 3405256, 4830712, 5466332, 10932664, 25965077, 51930154, 103860308, 207720616]

約数ペア:

[(1, 207720616), (2, 103860308), (4, 51930154), (8, 25965077), (19, 10932664), (38, 5466332), (43, 4830712), (61, 3405256), (76, 2733166), (86, 2415356), (122, 1702628), (152, 1366583), (172, 1207678), (244, 851314), (344, 603839), (488, 425657), (521, 398696), (817, 254248), (1042, 199348), (1159, 179224), (1634, 127124), (2084, 99674), (2318, 89612), (2623, 79192), (3268, 63562), (4168, 49837), (4636, 44806), (5246, 39596), (6536, 31781), (9272, 22403), (9899, 20984), (10492, 19798)]