251971020

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{349}}^1$

素因数の和:565

約数の個数: 192

約数和(自身を含む): 903168000

約数和(自身を除く): 651196980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 191, 210, 252, 270, 315, 349, 378, 382, 420, 540, 573, 630, 698, 756, 764, 945, 955, 1047, 1146, 1260, 1337, 1396, 1719, 1745, 1890, 1910, 2094, 2292, 2443, 2674, 2865, 3141, 3438, 3490, 3780, 3820, 4011, 4188, 4886, 5157, 5235, 5348, 5730, 6282, 6685, 6876, 6980, 7329, 8022, 8595, 9423, 9772, 10314, 10470, 11460, 12033, 12215, 12564, 13370, 14658, 15705, 16044, 17190, 18846, 20055, 20628, 20940, 21987, 24066, 24430, 25785, 26740, 29316, 31410, 34380, 36099, 36645, 37692, 40110, 43974, 47115, 48132, 48860, 51570, 60165, 62820, 65961, 66659, 72198, 73290, 80220, 87948, 94230, 103140, 109935, 120330, 131922, 133318, 144396, 146580, 180495, 188460, 199977, 219870, 240660, 263844, 266636, 329805, 333295, 360990, 399954, 439740, 466613, 599931, 659610, 666590, 721980, 799908, 933226, 999885, 1199862, 1319220, 1333180, 1399839, 1799793, 1866452, 1999770, 2333065, 2399724, 2799678, 2999655, 3599586, 3999540, 4199517, 4666130, 5599356, 5999310, 6999195, 7199172, 8399034, 8998965, 9332260, 11998620, 12598551, 13998390, 16798068, 17997930, 20997585, 25197102, 27996780, 35995860, 41995170, 50394204, 62992755, 83990340, 125985510, 251971020]

約数ペア:

[(1, 251971020), (2, 125985510), (3, 83990340), (4, 62992755), (5, 50394204), (6, 41995170), (7, 35995860), (9, 27996780), (10, 25197102), (12, 20997585), (14, 17997930), (15, 16798068), (18, 13998390), (20, 12598551), (21, 11998620), (27, 9332260), (28, 8998965), (30, 8399034), (35, 7199172), (36, 6999195), (42, 5999310), (45, 5599356), (54, 4666130), (60, 4199517), (63, 3999540), (70, 3599586), (84, 2999655), (90, 2799678), (105, 2399724), (108, 2333065), (126, 1999770), (135, 1866452), (140, 1799793), (180, 1399839), (189, 1333180), (191, 1319220), (210, 1199862), (252, 999885), (270, 933226), (315, 799908), (349, 721980), (378, 666590), (382, 659610), (420, 599931), (540, 466613), (573, 439740), (630, 399954), (698, 360990), (756, 333295), (764, 329805), (945, 266636), (955, 263844), (1047, 240660), (1146, 219870), (1260, 199977), (1337, 188460), (1396, 180495), (1719, 146580), (1745, 144396), (1890, 133318), (1910, 131922), (2094, 120330), (2292, 109935), (2443, 103140), (2674, 94230), (2865, 87948), (3141, 80220), (3438, 73290), (3490, 72198), (3780, 66659), (3820, 65961), (4011, 62820), (4188, 60165), (4886, 51570), (5157, 48860), (5235, 48132), (5348, 47115), (5730, 43974), (6282, 40110), (6685, 37692), (6876, 36645), (6980, 36099), (7329, 34380), (8022, 31410), (8595, 29316), (9423, 26740), (9772, 25785), (10314, 24430), (10470, 24066), (11460, 21987), (12033, 20940), (12215, 20628), (12564, 20055), (13370, 18846), (14658, 17190), (15705, 16044)]