251885480

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1669}}^1$

素因数の和:1712

約数の個数: 128

約数和(自身を含む): 721440000

約数和(自身を除く): 469554520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 343, 385, 392, 440, 490, 539, 616, 686, 770, 980, 1078, 1372, 1540, 1669, 1715, 1960, 2156, 2695, 2744, 3080, 3338, 3430, 3773, 4312, 5390, 6676, 6860, 7546, 8345, 10780, 11683, 13352, 13720, 15092, 16690, 18359, 18865, 21560, 23366, 30184, 33380, 36718, 37730, 46732, 58415, 66760, 73436, 75460, 81781, 91795, 93464, 116830, 128513, 146872, 150920, 163562, 183590, 233660, 257026, 327124, 367180, 408905, 467320, 514052, 572467, 642565, 654248, 734360, 817810, 899591, 1028104, 1144934, 1285130, 1635620, 1799182, 2289868, 2570260, 2862335, 3271240, 3598364, 4497955, 4579736, 5140520, 5724670, 6297137, 7196728, 8995910, 11449340, 12594274, 17991820, 22898680, 25188548, 31485685, 35983640, 50377096, 62971370, 125942740, 251885480]

約数ペア:

[(1, 251885480), (2, 125942740), (4, 62971370), (5, 50377096), (7, 35983640), (8, 31485685), (10, 25188548), (11, 22898680), (14, 17991820), (20, 12594274), (22, 11449340), (28, 8995910), (35, 7196728), (40, 6297137), (44, 5724670), (49, 5140520), (55, 4579736), (56, 4497955), (70, 3598364), (77, 3271240), (88, 2862335), (98, 2570260), (110, 2289868), (140, 1799182), (154, 1635620), (196, 1285130), (220, 1144934), (245, 1028104), (280, 899591), (308, 817810), (343, 734360), (385, 654248), (392, 642565), (440, 572467), (490, 514052), (539, 467320), (616, 408905), (686, 367180), (770, 327124), (980, 257026), (1078, 233660), (1372, 183590), (1540, 163562), (1669, 150920), (1715, 146872), (1960, 128513), (2156, 116830), (2695, 93464), (2744, 91795), (3080, 81781), (3338, 75460), (3430, 73436), (3773, 66760), (4312, 58415), (5390, 46732), (6676, 37730), (6860, 36718), (7546, 33380), (8345, 30184), (10780, 23366), (11683, 21560), (13352, 18865), (13720, 18359), (15092, 16690)]