19970400

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 144

約数和(自身を含む): 66651984

約数和(自身を除く): 46681584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 53, 60, 75, 80, 96, 100, 106, 120, 150, 157, 159, 160, 200, 212, 240, 265, 300, 314, 318, 400, 424, 471, 480, 530, 600, 628, 636, 785, 795, 800, 848, 942, 1060, 1200, 1256, 1272, 1325, 1570, 1590, 1696, 1884, 2120, 2355, 2400, 2512, 2544, 2650, 3140, 3180, 3768, 3925, 3975, 4240, 4710, 5024, 5088, 5300, 6280, 6360, 7536, 7850, 7950, 8321, 8480, 9420, 10600, 11775, 12560, 12720, 15072, 15700, 15900, 16642, 18840, 21200, 23550, 24963, 25120, 25440, 31400, 31800, 33284, 37680, 41605, 42400, 47100, 49926, 62800, 63600, 66568, 75360, 83210, 94200, 99852, 124815, 125600, 127200, 133136, 166420, 188400, 199704, 208025, 249630, 266272, 332840, 376800, 399408, 416050, 499260, 624075, 665680, 798816, 832100, 998520, 1248150, 1331360, 1664200, 1997040, 2496300, 3328400, 3994080, 4992600, 6656800, 9985200, 19970400]

約数ペア:

[(1, 19970400), (2, 9985200), (3, 6656800), (4, 4992600), (5, 3994080), (6, 3328400), (8, 2496300), (10, 1997040), (12, 1664200), (15, 1331360), (16, 1248150), (20, 998520), (24, 832100), (25, 798816), (30, 665680), (32, 624075), (40, 499260), (48, 416050), (50, 399408), (53, 376800), (60, 332840), (75, 266272), (80, 249630), (96, 208025), (100, 199704), (106, 188400), (120, 166420), (150, 133136), (157, 127200), (159, 125600), (160, 124815), (200, 99852), (212, 94200), (240, 83210), (265, 75360), (300, 66568), (314, 63600), (318, 62800), (400, 49926), (424, 47100), (471, 42400), (480, 41605), (530, 37680), (600, 33284), (628, 31800), (636, 31400), (785, 25440), (795, 25120), (800, 24963), (848, 23550), (942, 21200), (1060, 18840), (1200, 16642), (1256, 15900), (1272, 15700), (1325, 15072), (1570, 12720), (1590, 12560), (1696, 11775), (1884, 10600), (2120, 9420), (2355, 8480), (2400, 8321), (2512, 7950), (2544, 7850), (2650, 7536), (3140, 6360), (3180, 6280), (3768, 5300), (3925, 5088), (3975, 5024), (4240, 4710)]