19903020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{4951}}^1$

素因数の和:5030

約数の個数: 48

約数和(自身を含む): 56571648

約数和(自身を除く): 36668628

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 4951, 9902, 14853, 19804, 24755, 29706, 49510, 59412, 74265, 99020, 148530, 297060, 331717, 663434, 995151, 1326868, 1658585, 1990302, 3317170, 3980604, 4975755, 6634340, 9951510, 19903020]

約数ペア:

[(1, 19903020), (2, 9951510), (3, 6634340), (4, 4975755), (5, 3980604), (6, 3317170), (10, 1990302), (12, 1658585), (15, 1326868), (20, 995151), (30, 663434), (60, 331717), (67, 297060), (134, 148530), (201, 99020), (268, 74265), (335, 59412), (402, 49510), (670, 29706), (804, 24755), (1005, 19804), (1340, 14853), (2010, 9902), (4020, 4951)]