15881960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 38033280

約数和(自身を除く): 22151320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 283, 305, 460, 488, 566, 610, 920, 1132, 1220, 1403, 1415, 2264, 2440, 2806, 2830, 5612, 5660, 6509, 7015, 11224, 11320, 13018, 14030, 17263, 26036, 28060, 32545, 34526, 52072, 56120, 65090, 69052, 86315, 130180, 138104, 172630, 260360, 345260, 397049, 690520, 794098, 1588196, 1985245, 3176392, 3970490, 7940980, 15881960]

約数ペア:

[(1, 15881960), (2, 7940980), (4, 3970490), (5, 3176392), (8, 1985245), (10, 1588196), (20, 794098), (23, 690520), (40, 397049), (46, 345260), (61, 260360), (92, 172630), (115, 138104), (122, 130180), (184, 86315), (230, 69052), (244, 65090), (283, 56120), (305, 52072), (460, 34526), (488, 32545), (566, 28060), (610, 26036), (920, 17263), (1132, 14030), (1220, 13018), (1403, 11320), (1415, 11224), (2264, 7015), (2440, 6509), (2806, 5660), (2830, 5612)]