131521840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{293}}^1$

素因数の和:518

約数の個数: 80

約数和(自身を含む): 318479616

約数和(自身を除く): 186957776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 181, 248, 293, 310, 362, 496, 586, 620, 724, 905, 1172, 1240, 1448, 1465, 1810, 2344, 2480, 2896, 2930, 3620, 4688, 5611, 5860, 7240, 9083, 11222, 11720, 14480, 18166, 22444, 23440, 28055, 36332, 44888, 45415, 53033, 56110, 72664, 89776, 90830, 106066, 112220, 145328, 181660, 212132, 224440, 265165, 363320, 424264, 448880, 530330, 726640, 848528, 1060660, 1644023, 2121320, 3288046, 4242640, 6576092, 8220115, 13152184, 16440230, 26304368, 32880460, 65760920, 131521840]

約数ペア:

[(1, 131521840), (2, 65760920), (4, 32880460), (5, 26304368), (8, 16440230), (10, 13152184), (16, 8220115), (20, 6576092), (31, 4242640), (40, 3288046), (62, 2121320), (80, 1644023), (124, 1060660), (155, 848528), (181, 726640), (248, 530330), (293, 448880), (310, 424264), (362, 363320), (496, 265165), (586, 224440), (620, 212132), (724, 181660), (905, 145328), (1172, 112220), (1240, 106066), (1448, 90830), (1465, 89776), (1810, 72664), (2344, 56110), (2480, 53033), (2896, 45415), (2930, 44888), (3620, 36332), (4688, 28055), (5611, 23440), (5860, 22444), (7240, 18166), (9083, 14480), (11222, 11720)]