81085480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3967}}^1$

素因数の和:4058

約数の個数: 64

約数和(自身を含む): 211415040

約数和(自身を除く): 130329560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 3967, 4088, 5110, 7934, 10220, 15868, 19835, 20440, 27769, 31736, 39670, 55538, 79340, 111076, 138845, 158680, 222152, 277690, 289591, 555380, 579182, 1110760, 1158364, 1447955, 2027137, 2316728, 2895910, 4054274, 5791820, 8108548, 10135685, 11583640, 16217096, 20271370, 40542740, 81085480]

約数ペア:

[(1, 81085480), (2, 40542740), (4, 20271370), (5, 16217096), (7, 11583640), (8, 10135685), (10, 8108548), (14, 5791820), (20, 4054274), (28, 2895910), (35, 2316728), (40, 2027137), (56, 1447955), (70, 1158364), (73, 1110760), (140, 579182), (146, 555380), (280, 289591), (292, 277690), (365, 222152), (511, 158680), (584, 138845), (730, 111076), (1022, 79340), (1460, 55538), (2044, 39670), (2555, 31736), (2920, 27769), (3967, 20440), (4088, 19835), (5110, 15868), (7934, 10220)]