81231600

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:647

約数の個数: 120

約数和(自身を含む): 262622080

約数和(自身を除く): 181390480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 139, 150, 200, 240, 278, 300, 400, 417, 487, 556, 600, 695, 834, 974, 1112, 1200, 1390, 1461, 1668, 1948, 2085, 2224, 2435, 2780, 2922, 3336, 3475, 3896, 4170, 4870, 5560, 5844, 6672, 6950, 7305, 7792, 8340, 9740, 10425, 11120, 11688, 12175, 13900, 14610, 16680, 19480, 20850, 23376, 24350, 27800, 29220, 33360, 36525, 38960, 41700, 48700, 55600, 58440, 67693, 73050, 83400, 97400, 116880, 135386, 146100, 166800, 194800, 203079, 270772, 292200, 338465, 406158, 541544, 584400, 676930, 812316, 1015395, 1083088, 1353860, 1624632, 1692325, 2030790, 2707720, 3249264, 3384650, 4061580, 5076975, 5415440, 6769300, 8123160, 10153950, 13538600, 16246320, 20307900, 27077200, 40615800, 81231600]

約数ペア:

[(1, 81231600), (2, 40615800), (3, 27077200), (4, 20307900), (5, 16246320), (6, 13538600), (8, 10153950), (10, 8123160), (12, 6769300), (15, 5415440), (16, 5076975), (20, 4061580), (24, 3384650), (25, 3249264), (30, 2707720), (40, 2030790), (48, 1692325), (50, 1624632), (60, 1353860), (75, 1083088), (80, 1015395), (100, 812316), (120, 676930), (139, 584400), (150, 541544), (200, 406158), (240, 338465), (278, 292200), (300, 270772), (400, 203079), (417, 194800), (487, 166800), (556, 146100), (600, 135386), (695, 116880), (834, 97400), (974, 83400), (1112, 73050), (1200, 67693), (1390, 58440), (1461, 55600), (1668, 48700), (1948, 41700), (2085, 38960), (2224, 36525), (2435, 33360), (2780, 29220), (2922, 27800), (3336, 24350), (3475, 23376), (3896, 20850), (4170, 19480), (4870, 16680), (5560, 14610), (5844, 13900), (6672, 12175), (6950, 11688), (7305, 11120), (7792, 10425), (8340, 9740)]