77665840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{419}}^1$

素因数の和:770

約数の個数: 80

約数和(自身を含む): 207486720

約数和(自身を除く): 129820880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 331, 419, 560, 662, 838, 1324, 1655, 1676, 2095, 2317, 2648, 2933, 3310, 3352, 4190, 4634, 5296, 5866, 6620, 6704, 8380, 9268, 11585, 11732, 13240, 14665, 16760, 18536, 23170, 23464, 26480, 29330, 33520, 37072, 46340, 46928, 58660, 92680, 117320, 138689, 185360, 234640, 277378, 554756, 693445, 970823, 1109512, 1386890, 1941646, 2219024, 2773780, 3883292, 4854115, 5547560, 7766584, 9708230, 11095120, 15533168, 19416460, 38832920, 77665840]

約数ペア:

[(1, 77665840), (2, 38832920), (4, 19416460), (5, 15533168), (7, 11095120), (8, 9708230), (10, 7766584), (14, 5547560), (16, 4854115), (20, 3883292), (28, 2773780), (35, 2219024), (40, 1941646), (56, 1386890), (70, 1109512), (80, 970823), (112, 693445), (140, 554756), (280, 277378), (331, 234640), (419, 185360), (560, 138689), (662, 117320), (838, 92680), (1324, 58660), (1655, 46928), (1676, 46340), (2095, 37072), (2317, 33520), (2648, 29330), (2933, 26480), (3310, 23464), (3352, 23170), (4190, 18536), (4634, 16760), (5296, 14665), (5866, 13240), (6620, 11732), (6704, 11585), (8380, 9268)]