7680140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 17592960

約数和(自身を除く): 9912820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 271, 436, 542, 545, 1084, 1090, 1355, 1417, 2180, 2710, 2834, 3523, 5420, 5668, 7046, 7085, 14092, 14170, 17615, 28340, 29539, 35230, 59078, 70460, 118156, 147695, 295390, 384007, 590780, 768014, 1536028, 1920035, 3840070, 7680140]

約数ペア:

[(1, 7680140), (2, 3840070), (4, 1920035), (5, 1536028), (10, 768014), (13, 590780), (20, 384007), (26, 295390), (52, 147695), (65, 118156), (109, 70460), (130, 59078), (218, 35230), (260, 29539), (271, 28340), (436, 17615), (542, 14170), (545, 14092), (1084, 7085), (1090, 7046), (1355, 5668), (1417, 5420), (2180, 3523), (2710, 2834)]