221255307

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2309}}^1$

素因数の和:2354

約数の個数: 60

約数和(自身を含む): 409202640

約数和(自身を除く): 187947333

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 169, 189, 273, 351, 507, 567, 819, 1053, 1183, 1521, 2309, 2457, 3549, 4563, 6927, 7371, 10647, 13689, 16163, 20781, 30017, 31941, 48489, 62343, 90051, 95823, 145467, 187029, 210119, 270153, 390221, 436401, 630357, 810459, 1170663, 1309203, 1891071, 2431377, 2731547, 3511989, 5673213, 8194641, 10535967, 17019639, 24583923, 31607901, 73751769, 221255307]

約数ペア:

[(1, 221255307), (3, 73751769), (7, 31607901), (9, 24583923), (13, 17019639), (21, 10535967), (27, 8194641), (39, 5673213), (63, 3511989), (81, 2731547), (91, 2431377), (117, 1891071), (169, 1309203), (189, 1170663), (273, 810459), (351, 630357), (507, 436401), (567, 390221), (819, 270153), (1053, 210119), (1183, 187029), (1521, 145467), (2309, 95823), (2457, 90051), (3549, 62343), (4563, 48489), (6927, 31941), (7371, 30017), (10647, 20781), (13689, 16163)]