28036780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{829}}^1$

素因数の和:946

約数の個数: 48

約数和(自身を含む): 62748000

約数和(自身を除く): 34711220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 829, 890, 1658, 1691, 1780, 3316, 3382, 4145, 6764, 8290, 8455, 15751, 16580, 16910, 31502, 33820, 63004, 73781, 78755, 147562, 157510, 295124, 315020, 368905, 737810, 1401839, 1475620, 2803678, 5607356, 7009195, 14018390, 28036780]

約数ペア:

[(1, 28036780), (2, 14018390), (4, 7009195), (5, 5607356), (10, 2803678), (19, 1475620), (20, 1401839), (38, 737810), (76, 368905), (89, 315020), (95, 295124), (178, 157510), (190, 147562), (356, 78755), (380, 73781), (445, 63004), (829, 33820), (890, 31502), (1658, 16910), (1691, 16580), (1780, 15751), (3316, 8455), (3382, 8290), (4145, 6764)]