640386900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{5119}}^1$

素因数の和:5278

約数の個数: 108

約数和(自身を含む): 2022092800

約数和(自身を除く): 1381705900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 139, 150, 180, 225, 278, 300, 417, 450, 556, 695, 834, 900, 1251, 1390, 1668, 2085, 2502, 2780, 3475, 4170, 5004, 5119, 6255, 6950, 8340, 10238, 10425, 12510, 13900, 15357, 20476, 20850, 25020, 25595, 30714, 31275, 41700, 46071, 51190, 61428, 62550, 76785, 92142, 102380, 125100, 127975, 153570, 184284, 230355, 255950, 307140, 383925, 460710, 511900, 711541, 767850, 921420, 1151775, 1423082, 1535700, 2134623, 2303550, 2846164, 3557705, 4269246, 4607100, 6403869, 7115410, 8538492, 10673115, 12807738, 14230820, 17788525, 21346230, 25615476, 32019345, 35577050, 42692460, 53365575, 64038690, 71154100, 106731150, 128077380, 160096725, 213462300, 320193450, 640386900]

約数ペア:

[(1, 640386900), (2, 320193450), (3, 213462300), (4, 160096725), (5, 128077380), (6, 106731150), (9, 71154100), (10, 64038690), (12, 53365575), (15, 42692460), (18, 35577050), (20, 32019345), (25, 25615476), (30, 21346230), (36, 17788525), (45, 14230820), (50, 12807738), (60, 10673115), (75, 8538492), (90, 7115410), (100, 6403869), (139, 4607100), (150, 4269246), (180, 3557705), (225, 2846164), (278, 2303550), (300, 2134623), (417, 1535700), (450, 1423082), (556, 1151775), (695, 921420), (834, 767850), (900, 711541), (1251, 511900), (1390, 460710), (1668, 383925), (2085, 307140), (2502, 255950), (2780, 230355), (3475, 184284), (4170, 153570), (5004, 127975), (5119, 125100), (6255, 102380), (6950, 92142), (8340, 76785), (10238, 62550), (10425, 61428), (12510, 51190), (13900, 46071), (15357, 41700), (20476, 31275), (20850, 30714), (25020, 25595)]