25134640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 61246080

約数和(自身を除く): 36111440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 79, 80, 82, 97, 158, 164, 194, 205, 316, 328, 388, 395, 410, 485, 632, 656, 776, 790, 820, 970, 1264, 1552, 1580, 1640, 1940, 3160, 3239, 3280, 3880, 3977, 6320, 6478, 7663, 7760, 7954, 12956, 15326, 15908, 16195, 19885, 25912, 30652, 31816, 32390, 38315, 39770, 51824, 61304, 63632, 64780, 76630, 79540, 122608, 129560, 153260, 159080, 259120, 306520, 314183, 318160, 613040, 628366, 1256732, 1570915, 2513464, 3141830, 5026928, 6283660, 12567320, 25134640]

約数ペア:

[(1, 25134640), (2, 12567320), (4, 6283660), (5, 5026928), (8, 3141830), (10, 2513464), (16, 1570915), (20, 1256732), (40, 628366), (41, 613040), (79, 318160), (80, 314183), (82, 306520), (97, 259120), (158, 159080), (164, 153260), (194, 129560), (205, 122608), (316, 79540), (328, 76630), (388, 64780), (395, 63632), (410, 61304), (485, 51824), (632, 39770), (656, 38315), (776, 32390), (790, 31816), (820, 30652), (970, 25912), (1264, 19885), (1552, 16195), (1580, 15908), (1640, 15326), (1940, 12956), (3160, 7954), (3239, 7760), (3280, 7663), (3880, 6478), (3977, 6320)]