31280800

素因数分解:

$2^5\times 5^2\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:722

約数の個数: 72

約数和(自身を含む): 77737212

約数和(自身を除く): 46456412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 80, 100, 122, 160, 200, 244, 305, 400, 488, 610, 641, 800, 976, 1220, 1282, 1525, 1952, 2440, 2564, 3050, 3205, 4880, 5128, 6100, 6410, 9760, 10256, 12200, 12820, 16025, 20512, 24400, 25640, 32050, 39101, 48800, 51280, 64100, 78202, 102560, 128200, 156404, 195505, 256400, 312808, 391010, 512800, 625616, 782020, 977525, 1251232, 1564040, 1955050, 3128080, 3910100, 6256160, 7820200, 15640400, 31280800]

約数ペア:

[(1, 31280800), (2, 15640400), (4, 7820200), (5, 6256160), (8, 3910100), (10, 3128080), (16, 1955050), (20, 1564040), (25, 1251232), (32, 977525), (40, 782020), (50, 625616), (61, 512800), (80, 391010), (100, 312808), (122, 256400), (160, 195505), (200, 156404), (244, 128200), (305, 102560), (400, 78202), (488, 64100), (610, 51280), (641, 48800), (800, 39101), (976, 32050), (1220, 25640), (1282, 24400), (1525, 20512), (1952, 16025), (2440, 12820), (2564, 12200), (3050, 10256), (3205, 9760), (4880, 6410), (5128, 6100)]