20154163960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{461}}^1\times {\mathrm{809}}^1$

素因数の和:1481

約数の個数: 128

約数和(自身を含む): 52271049600

約数和(自身を除く): 32116885640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 386, 461, 772, 809, 922, 965, 1351, 1544, 1618, 1844, 1930, 2305, 2702, 3227, 3236, 3688, 3860, 4045, 4610, 5404, 5663, 6454, 6472, 6755, 7720, 8090, 9220, 10808, 11326, 12908, 13510, 16135, 16180, 18440, 22652, 25816, 27020, 28315, 32270, 32360, 45304, 54040, 56630, 64540, 88973, 113260, 129080, 156137, 177946, 226520, 312274, 355892, 372949, 444865, 622811, 624548, 711784, 745898, 780685, 889730, 1092959, 1245622, 1249096, 1491796, 1561370, 1779460, 1864745, 2185918, 2491244, 2610643, 2983592, 3114055, 3122740, 3558920, 3729490, 4371836, 4982488, 5221286, 5464795, 6228110, 6245480, 7458980, 8743672, 10442572, 10929590, 12456220, 13053215, 14917960, 20885144, 21859180, 24912440, 26106430, 43718360, 52212860, 71979157, 104425720, 143958314, 287916628, 359895785, 503854099, 575833256, 719791570, 1007708198, 1439583140, 2015416396, 2519270495, 2879166280, 4030832792, 5038540990, 10077081980, 20154163960]

約数ペア:

[(1, 20154163960), (2, 10077081980), (4, 5038540990), (5, 4030832792), (7, 2879166280), (8, 2519270495), (10, 2015416396), (14, 1439583140), (20, 1007708198), (28, 719791570), (35, 575833256), (40, 503854099), (56, 359895785), (70, 287916628), (140, 143958314), (193, 104425720), (280, 71979157), (386, 52212860), (461, 43718360), (772, 26106430), (809, 24912440), (922, 21859180), (965, 20885144), (1351, 14917960), (1544, 13053215), (1618, 12456220), (1844, 10929590), (1930, 10442572), (2305, 8743672), (2702, 7458980), (3227, 6245480), (3236, 6228110), (3688, 5464795), (3860, 5221286), (4045, 4982488), (4610, 4371836), (5404, 3729490), (5663, 3558920), (6454, 3122740), (6472, 3114055), (6755, 2983592), (7720, 2610643), (8090, 2491244), (9220, 2185918), (10808, 1864745), (11326, 1779460), (12908, 1561370), (13510, 1491796), (16135, 1249096), (16180, 1245622), (18440, 1092959), (22652, 889730), (25816, 780685), (27020, 745898), (28315, 711784), (32270, 624548), (32360, 622811), (45304, 444865), (54040, 372949), (56630, 355892), (64540, 312274), (88973, 226520), (113260, 177946), (129080, 156137)]