20720400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:609

約数の個数: 120

約数和(自身を含む): 68638464

約数和(自身を除く): 47918064

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 31, 40, 48, 50, 60, 62, 75, 80, 93, 100, 120, 124, 150, 155, 186, 200, 240, 248, 300, 310, 372, 400, 465, 496, 557, 600, 620, 744, 775, 930, 1114, 1200, 1240, 1488, 1550, 1671, 1860, 2228, 2325, 2480, 2785, 3100, 3342, 3720, 4456, 4650, 5570, 6200, 6684, 7440, 8355, 8912, 9300, 11140, 12400, 13368, 13925, 16710, 17267, 18600, 22280, 26736, 27850, 33420, 34534, 37200, 41775, 44560, 51801, 55700, 66840, 69068, 83550, 86335, 103602, 111400, 133680, 138136, 167100, 172670, 207204, 222800, 259005, 276272, 334200, 345340, 414408, 431675, 518010, 668400, 690680, 828816, 863350, 1036020, 1295025, 1381360, 1726700, 2072040, 2590050, 3453400, 4144080, 5180100, 6906800, 10360200, 20720400]

約数ペア:

[(1, 20720400), (2, 10360200), (3, 6906800), (4, 5180100), (5, 4144080), (6, 3453400), (8, 2590050), (10, 2072040), (12, 1726700), (15, 1381360), (16, 1295025), (20, 1036020), (24, 863350), (25, 828816), (30, 690680), (31, 668400), (40, 518010), (48, 431675), (50, 414408), (60, 345340), (62, 334200), (75, 276272), (80, 259005), (93, 222800), (100, 207204), (120, 172670), (124, 167100), (150, 138136), (155, 133680), (186, 111400), (200, 103602), (240, 86335), (248, 83550), (300, 69068), (310, 66840), (372, 55700), (400, 51801), (465, 44560), (496, 41775), (557, 37200), (600, 34534), (620, 33420), (744, 27850), (775, 26736), (930, 22280), (1114, 18600), (1200, 17267), (1240, 16710), (1488, 13925), (1550, 13368), (1671, 12400), (1860, 11140), (2228, 9300), (2325, 8912), (2480, 8355), (2785, 7440), (3100, 6684), (3342, 6200), (3720, 5570), (4456, 4650)]