28357840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 76423680

約数和(自身を除く): 48065840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 553, 560, 632, 641, 790, 1106, 1264, 1282, 1580, 2212, 2564, 2765, 3160, 3205, 4424, 4487, 5128, 5530, 6320, 6410, 8848, 8974, 10256, 11060, 12820, 17948, 22120, 22435, 25640, 35896, 44240, 44870, 50639, 51280, 71792, 89740, 101278, 179480, 202556, 253195, 354473, 358960, 405112, 506390, 708946, 810224, 1012780, 1417892, 1772365, 2025560, 2835784, 3544730, 4051120, 5671568, 7089460, 14178920, 28357840]

約数ペア:

[(1, 28357840), (2, 14178920), (4, 7089460), (5, 5671568), (7, 4051120), (8, 3544730), (10, 2835784), (14, 2025560), (16, 1772365), (20, 1417892), (28, 1012780), (35, 810224), (40, 708946), (56, 506390), (70, 405112), (79, 358960), (80, 354473), (112, 253195), (140, 202556), (158, 179480), (280, 101278), (316, 89740), (395, 71792), (553, 51280), (560, 50639), (632, 44870), (641, 44240), (790, 35896), (1106, 25640), (1264, 22435), (1282, 22120), (1580, 17948), (2212, 12820), (2564, 11060), (2765, 10256), (3160, 8974), (3205, 8848), (4424, 6410), (4487, 6320), (5128, 5530)]