28702900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 65995776

約数和(自身を除く): 37292876

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 47, 50, 62, 94, 100, 124, 155, 188, 197, 235, 310, 394, 470, 620, 775, 788, 940, 985, 1175, 1457, 1550, 1970, 2350, 2914, 3100, 3940, 4700, 4925, 5828, 6107, 7285, 9259, 9850, 12214, 14570, 18518, 19700, 24428, 29140, 30535, 36425, 37036, 46295, 61070, 72850, 92590, 122140, 145700, 152675, 185180, 231475, 287029, 305350, 462950, 574058, 610700, 925900, 1148116, 1435145, 2870290, 5740580, 7175725, 14351450, 28702900]

約数ペア:

[(1, 28702900), (2, 14351450), (4, 7175725), (5, 5740580), (10, 2870290), (20, 1435145), (25, 1148116), (31, 925900), (47, 610700), (50, 574058), (62, 462950), (94, 305350), (100, 287029), (124, 231475), (155, 185180), (188, 152675), (197, 145700), (235, 122140), (310, 92590), (394, 72850), (470, 61070), (620, 46295), (775, 37036), (788, 36425), (940, 30535), (985, 29140), (1175, 24428), (1457, 19700), (1550, 18518), (1970, 14570), (2350, 12214), (2914, 9850), (3100, 9259), (3940, 7285), (4700, 6107), (4925, 5828)]