256973080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{311}}^1$

素因数の和:569

約数の個数: 128

約数和(自身を含む): 717050880

約数和(自身を除く): 460077800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 227, 260, 280, 311, 364, 454, 455, 520, 622, 728, 908, 910, 1135, 1244, 1555, 1589, 1816, 1820, 2177, 2270, 2488, 2951, 3110, 3178, 3640, 4043, 4354, 4540, 5902, 6220, 6356, 7945, 8086, 8708, 9080, 10885, 11804, 12440, 12712, 14755, 15890, 16172, 17416, 20215, 20657, 21770, 23608, 28301, 29510, 31780, 32344, 40430, 41314, 43540, 56602, 59020, 63560, 70597, 80860, 82628, 87080, 103285, 113204, 118040, 141194, 141505, 161720, 165256, 206570, 226408, 282388, 283010, 352985, 413140, 494179, 564776, 566020, 705970, 826280, 917761, 988358, 1132040, 1411940, 1835522, 1976716, 2470895, 2823880, 3671044, 3953432, 4588805, 4941790, 6424327, 7342088, 9177610, 9883580, 12848654, 18355220, 19767160, 25697308, 32121635, 36710440, 51394616, 64243270, 128486540, 256973080]

約数ペア:

[(1, 256973080), (2, 128486540), (4, 64243270), (5, 51394616), (7, 36710440), (8, 32121635), (10, 25697308), (13, 19767160), (14, 18355220), (20, 12848654), (26, 9883580), (28, 9177610), (35, 7342088), (40, 6424327), (52, 4941790), (56, 4588805), (65, 3953432), (70, 3671044), (91, 2823880), (104, 2470895), (130, 1976716), (140, 1835522), (182, 1411940), (227, 1132040), (260, 988358), (280, 917761), (311, 826280), (364, 705970), (454, 566020), (455, 564776), (520, 494179), (622, 413140), (728, 352985), (908, 283010), (910, 282388), (1135, 226408), (1244, 206570), (1555, 165256), (1589, 161720), (1816, 141505), (1820, 141194), (2177, 118040), (2270, 113204), (2488, 103285), (2951, 87080), (3110, 82628), (3178, 80860), (3640, 70597), (4043, 63560), (4354, 59020), (4540, 56602), (5902, 43540), (6220, 41314), (6356, 40430), (7945, 32344), (8086, 31780), (8708, 29510), (9080, 28301), (10885, 23608), (11804, 21770), (12440, 20657), (12712, 20215), (14755, 17416), (15890, 16172)]