420796720

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:722

約数の個数: 80

約数和(自身を含む): 999936000

約数和(自身を除く): 579139280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 127, 166, 254, 332, 415, 499, 508, 635, 664, 830, 998, 1016, 1270, 1328, 1660, 1996, 2032, 2495, 2540, 3320, 3992, 4990, 5080, 6640, 7984, 9980, 10160, 10541, 19960, 21082, 39920, 41417, 42164, 52705, 63373, 82834, 84328, 105410, 126746, 165668, 168656, 207085, 210820, 253492, 316865, 331336, 414170, 421640, 506984, 633730, 662672, 828340, 843280, 1013968, 1267460, 1656680, 2534920, 3313360, 5069840, 5259959, 10519918, 21039836, 26299795, 42079672, 52599590, 84159344, 105199180, 210398360, 420796720]

約数ペア:

[(1, 420796720), (2, 210398360), (4, 105199180), (5, 84159344), (8, 52599590), (10, 42079672), (16, 26299795), (20, 21039836), (40, 10519918), (80, 5259959), (83, 5069840), (127, 3313360), (166, 2534920), (254, 1656680), (332, 1267460), (415, 1013968), (499, 843280), (508, 828340), (635, 662672), (664, 633730), (830, 506984), (998, 421640), (1016, 414170), (1270, 331336), (1328, 316865), (1660, 253492), (1996, 210820), (2032, 207085), (2495, 168656), (2540, 165668), (3320, 126746), (3992, 105410), (4990, 84328), (5080, 82834), (6640, 63373), (7984, 52705), (9980, 42164), (10160, 41417), (10541, 39920), (19960, 21082)]