25918280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 62424000

約数和(自身を除く): 36505720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 509, 536, 670, 760, 1018, 1273, 1340, 2036, 2545, 2546, 2680, 4072, 5090, 5092, 6365, 9671, 10180, 10184, 12730, 19342, 20360, 25460, 34103, 38684, 48355, 50920, 68206, 77368, 96710, 136412, 170515, 193420, 272824, 341030, 386840, 647957, 682060, 1295914, 1364120, 2591828, 3239785, 5183656, 6479570, 12959140, 25918280]

約数ペア:

[(1, 25918280), (2, 12959140), (4, 6479570), (5, 5183656), (8, 3239785), (10, 2591828), (19, 1364120), (20, 1295914), (38, 682060), (40, 647957), (67, 386840), (76, 341030), (95, 272824), (134, 193420), (152, 170515), (190, 136412), (268, 96710), (335, 77368), (380, 68206), (509, 50920), (536, 48355), (670, 38684), (760, 34103), (1018, 25460), (1273, 20360), (1340, 19342), (2036, 12730), (2545, 10184), (2546, 10180), (2680, 9671), (4072, 6365), (5090, 5092)]