19878560

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:550

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 33464800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 503, 520, 608, 760, 988, 1006, 1040, 1235, 1520, 1976, 2012, 2080, 2470, 2515, 3040, 3952, 4024, 4940, 5030, 6539, 7904, 8048, 9557, 9880, 10060, 13078, 16096, 19114, 19760, 20120, 26156, 32695, 38228, 39520, 40240, 47785, 52312, 65390, 76456, 80480, 95570, 104624, 124241, 130780, 152912, 191140, 209248, 248482, 261560, 305824, 382280, 496964, 523120, 621205, 764560, 993928, 1046240, 1242410, 1529120, 1987856, 2484820, 3975712, 4969640, 9939280, 19878560]

約数ペア:

[(1, 19878560), (2, 9939280), (4, 4969640), (5, 3975712), (8, 2484820), (10, 1987856), (13, 1529120), (16, 1242410), (19, 1046240), (20, 993928), (26, 764560), (32, 621205), (38, 523120), (40, 496964), (52, 382280), (65, 305824), (76, 261560), (80, 248482), (95, 209248), (104, 191140), (130, 152912), (152, 130780), (160, 124241), (190, 104624), (208, 95570), (247, 80480), (260, 76456), (304, 65390), (380, 52312), (416, 47785), (494, 40240), (503, 39520), (520, 38228), (608, 32695), (760, 26156), (988, 20120), (1006, 19760), (1040, 19114), (1235, 16096), (1520, 13078), (1976, 10060), (2012, 9880), (2080, 9557), (2470, 8048), (2515, 7904), (3040, 6539), (3952, 5030), (4024, 4940)]