2578940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 6763680

約数和(自身を除く): 4184740

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 109, 130, 140, 169, 182, 218, 260, 338, 364, 436, 455, 545, 676, 763, 845, 910, 1090, 1183, 1417, 1526, 1690, 1820, 2180, 2366, 2834, 3052, 3380, 3815, 4732, 5668, 5915, 7085, 7630, 9919, 11830, 14170, 15260, 18421, 19838, 23660, 28340, 36842, 39676, 49595, 73684, 92105, 99190, 128947, 184210, 198380, 257894, 368420, 515788, 644735, 1289470, 2578940]

約数ペア:

[(1, 2578940), (2, 1289470), (4, 644735), (5, 515788), (7, 368420), (10, 257894), (13, 198380), (14, 184210), (20, 128947), (26, 99190), (28, 92105), (35, 73684), (52, 49595), (65, 39676), (70, 36842), (91, 28340), (109, 23660), (130, 19838), (140, 18421), (169, 15260), (182, 14170), (218, 11830), (260, 9919), (338, 7630), (364, 7085), (436, 5915), (455, 5668), (545, 4732), (676, 3815), (763, 3380), (845, 3052), (910, 2834), (1090, 2366), (1183, 2180), (1417, 1820), (1526, 1690)]