278302557

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 439971840

約数和(自身を除く): 161669283

約数列:

[1, 3, 13, 19, 39, 47, 57, 61, 131, 141, 183, 247, 393, 611, 741, 793, 893, 1159, 1703, 1833, 2379, 2489, 2679, 2867, 3477, 5109, 6157, 7467, 7991, 8601, 11609, 15067, 18471, 23973, 32357, 34827, 37271, 45201, 54473, 80041, 97071, 103883, 111813, 116983, 151829, 163419, 240123, 311649, 350949, 375577, 455487, 708149, 1126731, 1520779, 1973777, 2124447, 4562337, 4882501, 5921331, 7135963, 14647503, 21407889, 92767519, 278302557]

約数ペア:

[(1, 278302557), (3, 92767519), (13, 21407889), (19, 14647503), (39, 7135963), (47, 5921331), (57, 4882501), (61, 4562337), (131, 2124447), (141, 1973777), (183, 1520779), (247, 1126731), (393, 708149), (611, 455487), (741, 375577), (793, 350949), (893, 311649), (1159, 240123), (1703, 163419), (1833, 151829), (2379, 116983), (2489, 111813), (2679, 103883), (2867, 97071), (3477, 80041), (5109, 54473), (6157, 45201), (7467, 37271), (7991, 34827), (8601, 32357), (11609, 23973), (15067, 18471)]