81317900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{229}}^1$

素因数の和:363

約数の個数: 72

約数和(自身を含む): 183269520

約数和(自身を除く): 101951620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 67, 100, 106, 134, 212, 229, 265, 268, 335, 458, 530, 670, 916, 1060, 1145, 1325, 1340, 1675, 2290, 2650, 3350, 3551, 4580, 5300, 5725, 6700, 7102, 11450, 12137, 14204, 15343, 17755, 22900, 24274, 30686, 35510, 48548, 60685, 61372, 71020, 76715, 88775, 121370, 153430, 177550, 242740, 303425, 306860, 355100, 383575, 606850, 767150, 813179, 1213700, 1534300, 1626358, 3252716, 4065895, 8131790, 16263580, 20329475, 40658950, 81317900]

約数ペア:

[(1, 81317900), (2, 40658950), (4, 20329475), (5, 16263580), (10, 8131790), (20, 4065895), (25, 3252716), (50, 1626358), (53, 1534300), (67, 1213700), (100, 813179), (106, 767150), (134, 606850), (212, 383575), (229, 355100), (265, 306860), (268, 303425), (335, 242740), (458, 177550), (530, 153430), (670, 121370), (916, 88775), (1060, 76715), (1145, 71020), (1325, 61372), (1340, 60685), (1675, 48548), (2290, 35510), (2650, 30686), (3350, 24274), (3551, 22900), (4580, 17755), (5300, 15343), (5725, 14204), (6700, 12137), (7102, 11450)]