40558720

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 97920000

約数和(自身を除く): 57361280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 499, 508, 635, 640, 998, 1016, 1270, 1996, 2032, 2495, 2540, 3992, 4064, 4990, 5080, 7984, 8128, 9980, 10160, 15968, 16256, 19960, 20320, 31936, 39920, 40640, 63373, 63872, 79840, 81280, 126746, 159680, 253492, 316865, 319360, 506984, 633730, 1013968, 1267460, 2027936, 2534920, 4055872, 5069840, 8111744, 10139680, 20279360, 40558720]

約数ペア:

[(1, 40558720), (2, 20279360), (4, 10139680), (5, 8111744), (8, 5069840), (10, 4055872), (16, 2534920), (20, 2027936), (32, 1267460), (40, 1013968), (64, 633730), (80, 506984), (127, 319360), (128, 316865), (160, 253492), (254, 159680), (320, 126746), (499, 81280), (508, 79840), (635, 63872), (640, 63373), (998, 40640), (1016, 39920), (1270, 31936), (1996, 20320), (2032, 19960), (2495, 16256), (2540, 15968), (3992, 10160), (4064, 9980), (4990, 8128), (5080, 7984)]