686248840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{13477}}^1$

素因数の和:13574

約数の個数: 64

約数和(自身を含む): 1649707200

約数和(自身を除く): 963458360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 536, 670, 760, 1273, 1340, 2546, 2680, 5092, 6365, 10184, 12730, 13477, 25460, 26954, 50920, 53908, 67385, 107816, 134770, 256063, 269540, 512126, 539080, 902959, 1024252, 1280315, 1805918, 2048504, 2560630, 3611836, 4514795, 5121260, 7223672, 9029590, 10242520, 17156221, 18059180, 34312442, 36118360, 68624884, 85781105, 137249768, 171562210, 343124420, 686248840]

約数ペア:

[(1, 686248840), (2, 343124420), (4, 171562210), (5, 137249768), (8, 85781105), (10, 68624884), (19, 36118360), (20, 34312442), (38, 18059180), (40, 17156221), (67, 10242520), (76, 9029590), (95, 7223672), (134, 5121260), (152, 4514795), (190, 3611836), (268, 2560630), (335, 2048504), (380, 1805918), (536, 1280315), (670, 1024252), (760, 902959), (1273, 539080), (1340, 512126), (2546, 269540), (2680, 256063), (5092, 134770), (6365, 107816), (10184, 67385), (12730, 53908), (13477, 50920), (25460, 26954)]