20182080880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2389}}^1\times {\mathrm{8123}}^1$

素因数の和:10538

約数の個数: 80

約数和(自身を含む): 50560201440

約数和(自身を除く): 30378120560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 2389, 4778, 8123, 9556, 11945, 16246, 19112, 23890, 31057, 32492, 38224, 40615, 47780, 62114, 64984, 81230, 95560, 105599, 124228, 129968, 155285, 162460, 191120, 211198, 248456, 310570, 324920, 422396, 496912, 527995, 621140, 649840, 844792, 1055990, 1242280, 1689584, 2111980, 2484560, 4223960, 8447920, 19405847, 38811694, 77623388, 97029235, 155246776, 194058470, 252276011, 310493552, 388116940, 504552022, 776233880, 1009104044, 1261380055, 1552467760, 2018208088, 2522760110, 4036416176, 5045520220, 10091040440, 20182080880]

約数ペア:

[(1, 20182080880), (2, 10091040440), (4, 5045520220), (5, 4036416176), (8, 2522760110), (10, 2018208088), (13, 1552467760), (16, 1261380055), (20, 1009104044), (26, 776233880), (40, 504552022), (52, 388116940), (65, 310493552), (80, 252276011), (104, 194058470), (130, 155246776), (208, 97029235), (260, 77623388), (520, 38811694), (1040, 19405847), (2389, 8447920), (4778, 4223960), (8123, 2484560), (9556, 2111980), (11945, 1689584), (16246, 1242280), (19112, 1055990), (23890, 844792), (31057, 649840), (32492, 621140), (38224, 527995), (40615, 496912), (47780, 422396), (62114, 324920), (64984, 310570), (81230, 248456), (95560, 211198), (105599, 191120), (124228, 162460), (129968, 155285)]