256709388

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:647

約数の個数: 96

約数和(自身を含む): 673361920

約数和(自身を除く): 416652532

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 109, 124, 156, 186, 218, 327, 372, 403, 436, 487, 654, 806, 974, 1209, 1308, 1417, 1461, 1612, 1948, 2418, 2834, 2922, 3379, 4251, 4836, 5668, 5844, 6331, 6758, 8502, 10137, 12662, 13516, 15097, 17004, 18993, 20274, 25324, 30194, 37986, 40548, 43927, 45291, 53083, 60388, 75972, 87854, 90582, 106166, 131781, 159249, 175708, 181164, 196261, 212332, 263562, 318498, 392522, 527124, 588783, 636996, 690079, 785044, 1177566, 1380158, 1645573, 2070237, 2355132, 2760316, 3291146, 4140474, 4936719, 6582292, 8280948, 9873438, 19746876, 21392449, 42784898, 64177347, 85569796, 128354694, 256709388]

約数ペア:

[(1, 256709388), (2, 128354694), (3, 85569796), (4, 64177347), (6, 42784898), (12, 21392449), (13, 19746876), (26, 9873438), (31, 8280948), (39, 6582292), (52, 4936719), (62, 4140474), (78, 3291146), (93, 2760316), (109, 2355132), (124, 2070237), (156, 1645573), (186, 1380158), (218, 1177566), (327, 785044), (372, 690079), (403, 636996), (436, 588783), (487, 527124), (654, 392522), (806, 318498), (974, 263562), (1209, 212332), (1308, 196261), (1417, 181164), (1461, 175708), (1612, 159249), (1948, 131781), (2418, 106166), (2834, 90582), (2922, 87854), (3379, 75972), (4251, 60388), (4836, 53083), (5668, 45291), (5844, 43927), (6331, 40548), (6758, 37986), (8502, 30194), (10137, 25324), (12662, 20274), (13516, 18993), (15097, 17004)]