40721000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1011

約数の個数: 64

約数和(自身を含む): 97606080

約数和(自身を除く): 56885080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 860, 947, 1000, 1075, 1720, 1894, 2150, 3788, 4300, 4735, 5375, 7576, 8600, 9470, 10750, 18940, 21500, 23675, 37880, 40721, 43000, 47350, 81442, 94700, 118375, 162884, 189400, 203605, 236750, 325768, 407210, 473500, 814420, 947000, 1018025, 1628840, 2036050, 4072100, 5090125, 8144200, 10180250, 20360500, 40721000]

約数ペア:

[(1, 40721000), (2, 20360500), (4, 10180250), (5, 8144200), (8, 5090125), (10, 4072100), (20, 2036050), (25, 1628840), (40, 1018025), (43, 947000), (50, 814420), (86, 473500), (100, 407210), (125, 325768), (172, 236750), (200, 203605), (215, 189400), (250, 162884), (344, 118375), (430, 94700), (500, 81442), (860, 47350), (947, 43000), (1000, 40721), (1075, 37880), (1720, 23675), (1894, 21500), (2150, 18940), (3788, 10750), (4300, 9470), (4735, 8600), (5375, 7576)]