320811960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20101}}^1$

素因数の和:20141

約数の個数: 128

約数和(自身を含む): 1157875200

約数和(自身を除く): 837063240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3990, 5320, 7980, 15960, 20101, 40202, 60303, 80404, 100505, 120606, 140707, 160808, 201010, 241212, 281414, 301515, 381919, 402020, 422121, 482424, 562828, 603030, 703535, 763838, 804040, 844242, 1125656, 1145757, 1206060, 1407070, 1527676, 1688484, 1909595, 2110605, 2291514, 2412120, 2673433, 2814140, 3055352, 3376968, 3819190, 4221210, 4583028, 5346866, 5628280, 5728785, 7638380, 8020299, 8442420, 9166056, 10693732, 11457570, 13367165, 15276760, 16040598, 16884840, 21387464, 22915140, 26734330, 32081196, 40101495, 45830280, 53468660, 64162392, 80202990, 106937320, 160405980, 320811960]

約数ペア:

[(1, 320811960), (2, 160405980), (3, 106937320), (4, 80202990), (5, 64162392), (6, 53468660), (7, 45830280), (8, 40101495), (10, 32081196), (12, 26734330), (14, 22915140), (15, 21387464), (19, 16884840), (20, 16040598), (21, 15276760), (24, 13367165), (28, 11457570), (30, 10693732), (35, 9166056), (38, 8442420), (40, 8020299), (42, 7638380), (56, 5728785), (57, 5628280), (60, 5346866), (70, 4583028), (76, 4221210), (84, 3819190), (95, 3376968), (105, 3055352), (114, 2814140), (120, 2673433), (133, 2412120), (140, 2291514), (152, 2110605), (168, 1909595), (190, 1688484), (210, 1527676), (228, 1407070), (266, 1206060), (280, 1145757), (285, 1125656), (380, 844242), (399, 804040), (420, 763838), (456, 703535), (532, 603030), (570, 562828), (665, 482424), (760, 422121), (798, 402020), (840, 381919), (1064, 301515), (1140, 281414), (1330, 241212), (1596, 201010), (1995, 160808), (2280, 140707), (2660, 120606), (3192, 100505), (3990, 80404), (5320, 60303), (7980, 40202), (15960, 20101)]