31990320

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:459

約数の個数: 120

約数和(自身を含む): 108500496

約数和(自身を除く): 76510176

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 157, 180, 240, 283, 314, 360, 471, 566, 628, 720, 785, 849, 942, 1132, 1256, 1413, 1415, 1570, 1698, 1884, 2264, 2355, 2512, 2547, 2826, 2830, 3140, 3396, 3768, 4245, 4528, 4710, 5094, 5652, 5660, 6280, 6792, 7065, 7536, 8490, 9420, 10188, 11304, 11320, 12560, 12735, 13584, 14130, 16980, 18840, 20376, 22608, 22640, 25470, 28260, 33960, 37680, 40752, 44431, 50940, 56520, 67920, 88862, 101880, 113040, 133293, 177724, 203760, 222155, 266586, 355448, 399879, 444310, 533172, 666465, 710896, 799758, 888620, 1066344, 1332930, 1599516, 1777240, 1999395, 2132688, 2665860, 3199032, 3554480, 3998790, 5331720, 6398064, 7997580, 10663440, 15995160, 31990320]

約数ペア:

[(1, 31990320), (2, 15995160), (3, 10663440), (4, 7997580), (5, 6398064), (6, 5331720), (8, 3998790), (9, 3554480), (10, 3199032), (12, 2665860), (15, 2132688), (16, 1999395), (18, 1777240), (20, 1599516), (24, 1332930), (30, 1066344), (36, 888620), (40, 799758), (45, 710896), (48, 666465), (60, 533172), (72, 444310), (80, 399879), (90, 355448), (120, 266586), (144, 222155), (157, 203760), (180, 177724), (240, 133293), (283, 113040), (314, 101880), (360, 88862), (471, 67920), (566, 56520), (628, 50940), (720, 44431), (785, 40752), (849, 37680), (942, 33960), (1132, 28260), (1256, 25470), (1413, 22640), (1415, 22608), (1570, 20376), (1698, 18840), (1884, 16980), (2264, 14130), (2355, 13584), (2512, 12735), (2547, 12560), (2826, 11320), (2830, 11304), (3140, 10188), (3396, 9420), (3768, 8490), (4245, 7536), (4528, 7065), (4710, 6792), (5094, 6280), (5652, 5660)]