18887960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5189}}^1$

素因数の和:5220

約数の個数: 64

約数和(自身を含む): 52315200

約数和(自身を除く): 33427240

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, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5189, 10378, 20756, 25945, 36323, 41512, 51890, 67457, 72646, 103780, 134914, 145292, 181615, 207560, 269828, 290584, 337285, 363230, 472199, 539656, 674570, 726460, 944398, 1349140, 1452920, 1888796, 2360995, 2698280, 3777592, 4721990, 9443980, 18887960]

約数ペア:

[(1, 18887960), (2, 9443980), (4, 4721990), (5, 3777592), (7, 2698280), (8, 2360995), (10, 1888796), (13, 1452920), (14, 1349140), (20, 944398), (26, 726460), (28, 674570), (35, 539656), (40, 472199), (52, 363230), (56, 337285), (65, 290584), (70, 269828), (91, 207560), (104, 181615), (130, 145292), (140, 134914), (182, 103780), (260, 72646), (280, 67457), (364, 51890), (455, 41512), (520, 36323), (728, 25945), (910, 20756), (1820, 10378), (3640, 5189)]