21505060520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1\times {\mathrm{50119}}^1$

素因数の和:50778

約数の個数: 64

約数和(自身を含む): 51314860800

約数和(自身を除く): 29809800280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 631, 680, 1262, 2524, 3155, 5048, 6310, 10727, 12620, 21454, 25240, 42908, 50119, 53635, 85816, 100238, 107270, 200476, 214540, 250595, 400952, 429080, 501190, 852023, 1002380, 1704046, 2004760, 3408092, 4260115, 6816184, 8520230, 17040460, 31625089, 34080920, 63250178, 126500356, 158125445, 253000712, 316250890, 537626513, 632501780, 1075253026, 1265003560, 2150506052, 2688132565, 4301012104, 5376265130, 10752530260, 21505060520]

約数ペア:

[(1, 21505060520), (2, 10752530260), (4, 5376265130), (5, 4301012104), (8, 2688132565), (10, 2150506052), (17, 1265003560), (20, 1075253026), (34, 632501780), (40, 537626513), (68, 316250890), (85, 253000712), (136, 158125445), (170, 126500356), (340, 63250178), (631, 34080920), (680, 31625089), (1262, 17040460), (2524, 8520230), (3155, 6816184), (5048, 4260115), (6310, 3408092), (10727, 2004760), (12620, 1704046), (21454, 1002380), (25240, 852023), (42908, 501190), (50119, 429080), (53635, 400952), (85816, 250595), (100238, 214540), (107270, 200476)]