21519367040

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{19583}}^1$

素因数の和:19720

約数の個数: 128

約数和(自身を含む): 55013022720

約数和(自身を除く): 33493655680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 101, 128, 136, 160, 170, 202, 272, 320, 340, 404, 505, 544, 640, 680, 808, 1010, 1088, 1360, 1616, 1717, 2020, 2176, 2720, 3232, 3434, 4040, 5440, 6464, 6868, 8080, 8585, 10880, 12928, 13736, 16160, 17170, 19583, 27472, 32320, 34340, 39166, 54944, 64640, 68680, 78332, 97915, 109888, 137360, 156664, 195830, 219776, 274720, 313328, 332911, 391660, 549440, 626656, 665822, 783320, 1098880, 1253312, 1331644, 1566640, 1664555, 1977883, 2506624, 2663288, 3133280, 3329110, 3955766, 5326576, 6266560, 6658220, 7911532, 9889415, 10653152, 12533120, 13316440, 15823064, 19778830, 21306304, 26632880, 31646128, 33624011, 39557660, 42612608, 53265760, 63292256, 67248022, 79115320, 106531520, 126584512, 134496044, 158230640, 168120055, 213063040, 253169024, 268992088, 316461280, 336240110, 537984176, 632922560, 672480220, 1075968352, 1265845120, 1344960440, 2151936704, 2689920880, 4303873408, 5379841760, 10759683520, 21519367040]

約数ペア:

[(1, 21519367040), (2, 10759683520), (4, 5379841760), (5, 4303873408), (8, 2689920880), (10, 2151936704), (16, 1344960440), (17, 1265845120), (20, 1075968352), (32, 672480220), (34, 632922560), (40, 537984176), (64, 336240110), (68, 316461280), (80, 268992088), (85, 253169024), (101, 213063040), (128, 168120055), (136, 158230640), (160, 134496044), (170, 126584512), (202, 106531520), (272, 79115320), (320, 67248022), (340, 63292256), (404, 53265760), (505, 42612608), (544, 39557660), (640, 33624011), (680, 31646128), (808, 26632880), (1010, 21306304), (1088, 19778830), (1360, 15823064), (1616, 13316440), (1717, 12533120), (2020, 10653152), (2176, 9889415), (2720, 7911532), (3232, 6658220), (3434, 6266560), (4040, 5326576), (5440, 3955766), (6464, 3329110), (6868, 3133280), (8080, 2663288), (8585, 2506624), (10880, 1977883), (12928, 1664555), (13736, 1566640), (16160, 1331644), (17170, 1253312), (19583, 1098880), (27472, 783320), (32320, 665822), (34340, 626656), (39166, 549440), (54944, 391660), (64640, 332911), (68680, 313328), (78332, 274720), (97915, 219776), (109888, 195830), (137360, 156664)]