51290000

素因数分解:

$2^4\times 5^4\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:274

約数の個数: 100

約数和(自身を含む): 130158336

約数和(自身を除く): 78868336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 125, 184, 200, 223, 230, 250, 368, 400, 446, 460, 500, 575, 625, 892, 920, 1000, 1115, 1150, 1250, 1784, 1840, 2000, 2230, 2300, 2500, 2875, 3568, 4460, 4600, 5000, 5129, 5575, 5750, 8920, 9200, 10000, 10258, 11150, 11500, 14375, 17840, 20516, 22300, 23000, 25645, 27875, 28750, 41032, 44600, 46000, 51290, 55750, 57500, 82064, 89200, 102580, 111500, 115000, 128225, 139375, 205160, 223000, 230000, 256450, 278750, 410320, 446000, 512900, 557500, 641125, 1025800, 1115000, 1282250, 2051600, 2230000, 2564500, 3205625, 5129000, 6411250, 10258000, 12822500, 25645000, 51290000]

約数ペア:

[(1, 51290000), (2, 25645000), (4, 12822500), (5, 10258000), (8, 6411250), (10, 5129000), (16, 3205625), (20, 2564500), (23, 2230000), (25, 2051600), (40, 1282250), (46, 1115000), (50, 1025800), (80, 641125), (92, 557500), (100, 512900), (115, 446000), (125, 410320), (184, 278750), (200, 256450), (223, 230000), (230, 223000), (250, 205160), (368, 139375), (400, 128225), (446, 115000), (460, 111500), (500, 102580), (575, 89200), (625, 82064), (892, 57500), (920, 55750), (1000, 51290), (1115, 46000), (1150, 44600), (1250, 41032), (1784, 28750), (1840, 27875), (2000, 25645), (2230, 23000), (2300, 22300), (2500, 20516), (2875, 17840), (3568, 14375), (4460, 11500), (4600, 11150), (5000, 10258), (5129, 10000), (5575, 9200), (5750, 8920)]