257018520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:638

約数の個数: 192

約数和(自身を含む): 876395520

約数和(自身を除く): 619377000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 121, 124, 132, 155, 165, 186, 220, 242, 248, 264, 310, 330, 341, 363, 372, 440, 465, 484, 571, 605, 620, 660, 682, 726, 744, 930, 968, 1023, 1142, 1210, 1240, 1320, 1364, 1452, 1705, 1713, 1815, 1860, 2046, 2284, 2420, 2728, 2855, 2904, 3410, 3426, 3630, 3720, 3751, 4092, 4568, 4840, 5115, 5710, 6281, 6820, 6852, 7260, 7502, 8184, 8565, 10230, 11253, 11420, 12562, 13640, 13704, 14520, 15004, 17130, 17701, 18755, 18843, 20460, 22506, 22840, 25124, 30008, 31405, 34260, 35402, 37510, 37686, 40920, 45012, 50248, 53103, 56265, 62810, 68520, 69091, 70804, 75020, 75372, 88505, 90024, 94215, 106206, 112530, 125620, 138182, 141608, 150040, 150744, 177010, 188430, 194711, 207273, 212412, 225060, 251240, 265515, 276364, 345455, 354020, 376860, 389422, 414546, 424824, 450120, 531030, 552728, 584133, 690910, 708040, 753720, 778844, 829092, 973555, 1036365, 1062060, 1168266, 1381820, 1557688, 1658184, 1947110, 2072730, 2124120, 2141821, 2336532, 2763640, 2920665, 3894220, 4145460, 4283642, 4673064, 5841330, 6425463, 7788440, 8290920, 8567284, 10709105, 11682660, 12850926, 17134568, 21418210, 23365320, 25701852, 32127315, 42836420, 51403704, 64254630, 85672840, 128509260, 257018520]

約数ペア:

[(1, 257018520), (2, 128509260), (3, 85672840), (4, 64254630), (5, 51403704), (6, 42836420), (8, 32127315), (10, 25701852), (11, 23365320), (12, 21418210), (15, 17134568), (20, 12850926), (22, 11682660), (24, 10709105), (30, 8567284), (31, 8290920), (33, 7788440), (40, 6425463), (44, 5841330), (55, 4673064), (60, 4283642), (62, 4145460), (66, 3894220), (88, 2920665), (93, 2763640), (110, 2336532), (120, 2141821), (121, 2124120), (124, 2072730), (132, 1947110), (155, 1658184), (165, 1557688), (186, 1381820), (220, 1168266), (242, 1062060), (248, 1036365), (264, 973555), (310, 829092), (330, 778844), (341, 753720), (363, 708040), (372, 690910), (440, 584133), (465, 552728), (484, 531030), (571, 450120), (605, 424824), (620, 414546), (660, 389422), (682, 376860), (726, 354020), (744, 345455), (930, 276364), (968, 265515), (1023, 251240), (1142, 225060), (1210, 212412), (1240, 207273), (1320, 194711), (1364, 188430), (1452, 177010), (1705, 150744), (1713, 150040), (1815, 141608), (1860, 138182), (2046, 125620), (2284, 112530), (2420, 106206), (2728, 94215), (2855, 90024), (2904, 88505), (3410, 75372), (3426, 75020), (3630, 70804), (3720, 69091), (3751, 68520), (4092, 62810), (4568, 56265), (4840, 53103), (5115, 50248), (5710, 45012), (6281, 40920), (6820, 37686), (6852, 37510), (7260, 35402), (7502, 34260), (8184, 31405), (8565, 30008), (10230, 25124), (11253, 22840), (11420, 22506), (12562, 20460), (13640, 18843), (13704, 18755), (14520, 17701), (15004, 17130)]