21000736480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{406361}}^1$

素因数の和:406412

約数の個数: 96

約数和(自身を含む): 55297740960

約数和(自身を除く): 34297004480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 160, 170, 190, 272, 304, 323, 340, 380, 544, 608, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 2720, 3040, 3230, 5168, 6460, 10336, 12920, 25840, 51680, 406361, 812722, 1625444, 2031805, 3250888, 4063610, 6501776, 6908137, 7720859, 8127220, 13003552, 13816274, 15441718, 16254440, 27632548, 30883436, 32508880, 34540685, 38604295, 55265096, 61766872, 65017760, 69081370, 77208590, 110530192, 123533744, 131254603, 138162740, 154417180, 221060384, 247067488, 262509206, 276325480, 308834360, 525018412, 552650960, 617668720, 656273015, 1050036824, 1105301920, 1235337440, 1312546030, 2100073648, 2625092060, 4200147296, 5250184120, 10500368240, 21000736480]

約数ペア:

[(1, 21000736480), (2, 10500368240), (4, 5250184120), (5, 4200147296), (8, 2625092060), (10, 2100073648), (16, 1312546030), (17, 1235337440), (19, 1105301920), (20, 1050036824), (32, 656273015), (34, 617668720), (38, 552650960), (40, 525018412), (68, 308834360), (76, 276325480), (80, 262509206), (85, 247067488), (95, 221060384), (136, 154417180), (152, 138162740), (160, 131254603), (170, 123533744), (190, 110530192), (272, 77208590), (304, 69081370), (323, 65017760), (340, 61766872), (380, 55265096), (544, 38604295), (608, 34540685), (646, 32508880), (680, 30883436), (760, 27632548), (1292, 16254440), (1360, 15441718), (1520, 13816274), (1615, 13003552), (2584, 8127220), (2720, 7720859), (3040, 6908137), (3230, 6501776), (5168, 4063610), (6460, 3250888), (10336, 2031805), (12920, 1625444), (25840, 812722), (51680, 406361)]