25638980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{619}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 57288000

約数和(自身を除く): 31649020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 619, 1090, 1238, 2071, 2180, 2476, 3095, 4142, 6190, 8284, 10355, 11761, 12380, 20710, 23522, 41420, 47044, 58805, 67471, 117610, 134942, 235220, 269884, 337355, 674710, 1281949, 1349420, 2563898, 5127796, 6409745, 12819490, 25638980]

約数ペア:

[(1, 25638980), (2, 12819490), (4, 6409745), (5, 5127796), (10, 2563898), (19, 1349420), (20, 1281949), (38, 674710), (76, 337355), (95, 269884), (109, 235220), (190, 134942), (218, 117610), (380, 67471), (436, 58805), (545, 47044), (619, 41420), (1090, 23522), (1238, 20710), (2071, 12380), (2180, 11761), (2476, 10355), (3095, 8284), (4142, 6190)]