201431920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1489}}^1$

素因数の和:1610

約数の個数: 80

約数和(自身を含む): 498852000

約数和(自身を除く): 297420080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1424, 1489, 1520, 1691, 1780, 2978, 3382, 3560, 5956, 6764, 7120, 7445, 8455, 11912, 13528, 14890, 16910, 23824, 27056, 28291, 29780, 33820, 56582, 59560, 67640, 113164, 119120, 132521, 135280, 141455, 226328, 265042, 282910, 452656, 530084, 565820, 662605, 1060168, 1131640, 1325210, 2120336, 2263280, 2517899, 2650420, 5035798, 5300840, 10071596, 10601680, 12589495, 20143192, 25178990, 40286384, 50357980, 100715960, 201431920]

約数ペア:

[(1, 201431920), (2, 100715960), (4, 50357980), (5, 40286384), (8, 25178990), (10, 20143192), (16, 12589495), (19, 10601680), (20, 10071596), (38, 5300840), (40, 5035798), (76, 2650420), (80, 2517899), (89, 2263280), (95, 2120336), (152, 1325210), (178, 1131640), (190, 1060168), (304, 662605), (356, 565820), (380, 530084), (445, 452656), (712, 282910), (760, 265042), (890, 226328), (1424, 141455), (1489, 135280), (1520, 132521), (1691, 119120), (1780, 113164), (2978, 67640), (3382, 59560), (3560, 56582), (5956, 33820), (6764, 29780), (7120, 28291), (7445, 27056), (8455, 23824), (11912, 16910), (13528, 14890)]