1001000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:52

約数の個数: 128

約数和(自身を含む): 3144960

約数和(自身を除く): 2143960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 25, 26, 28, 35, 40, 44, 50, 52, 55, 56, 65, 70, 77, 88, 91, 100, 104, 110, 125, 130, 140, 143, 154, 175, 182, 200, 220, 250, 260, 275, 280, 286, 308, 325, 350, 364, 385, 440, 455, 500, 520, 550, 572, 616, 650, 700, 715, 728, 770, 875, 910, 1000, 1001, 1100, 1144, 1300, 1375, 1400, 1430, 1540, 1625, 1750, 1820, 1925, 2002, 2200, 2275, 2600, 2750, 2860, 3080, 3250, 3500, 3575, 3640, 3850, 4004, 4550, 5005, 5500, 5720, 6500, 7000, 7150, 7700, 8008, 9100, 9625, 10010, 11000, 11375, 13000, 14300, 15400, 17875, 18200, 19250, 20020, 22750, 25025, 28600, 35750, 38500, 40040, 45500, 50050, 71500, 77000, 91000, 100100, 125125, 143000, 200200, 250250, 500500, 1001000]

約数ペア:

[(1, 1001000), (2, 500500), (4, 250250), (5, 200200), (7, 143000), (8, 125125), (10, 100100), (11, 91000), (13, 77000), (14, 71500), (20, 50050), (22, 45500), (25, 40040), (26, 38500), (28, 35750), (35, 28600), (40, 25025), (44, 22750), (50, 20020), (52, 19250), (55, 18200), (56, 17875), (65, 15400), (70, 14300), (77, 13000), (88, 11375), (91, 11000), (100, 10010), (104, 9625), (110, 9100), (125, 8008), (130, 7700), (140, 7150), (143, 7000), (154, 6500), (175, 5720), (182, 5500), (200, 5005), (220, 4550), (250, 4004), (260, 3850), (275, 3640), (280, 3575), (286, 3500), (308, 3250), (325, 3080), (350, 2860), (364, 2750), (385, 2600), (440, 2275), (455, 2200), (500, 2002), (520, 1925), (550, 1820), (572, 1750), (616, 1625), (650, 1540), (700, 1430), (715, 1400), (728, 1375), (770, 1300), (875, 1144), (910, 1100), (1000, 1001)]