20507840

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3373}}^1$

素因数の和:3409

約数の個数: 56

約数和(自身を含む): 51419760

約数和(自身を除く): 30911920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3373, 6080, 6746, 13492, 16865, 26984, 33730, 53968, 64087, 67460, 107936, 128174, 134920, 215872, 256348, 269840, 320435, 512696, 539680, 640870, 1025392, 1079360, 1281740, 2050784, 2563480, 4101568, 5126960, 10253920, 20507840]

約数ペア:

[(1, 20507840), (2, 10253920), (4, 5126960), (5, 4101568), (8, 2563480), (10, 2050784), (16, 1281740), (19, 1079360), (20, 1025392), (32, 640870), (38, 539680), (40, 512696), (64, 320435), (76, 269840), (80, 256348), (95, 215872), (152, 134920), (160, 128174), (190, 107936), (304, 67460), (320, 64087), (380, 53968), (608, 33730), (760, 26984), (1216, 16865), (1520, 13492), (3040, 6746), (3373, 6080)]