1800900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:75

約数の個数: 144

約数和(自身を含む): 6249600

約数和(自身を除く): 4448700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 25, 27, 29, 30, 36, 45, 46, 50, 54, 58, 60, 69, 75, 87, 90, 92, 100, 108, 115, 116, 135, 138, 145, 150, 174, 180, 207, 225, 230, 261, 270, 276, 290, 300, 345, 348, 414, 435, 450, 460, 522, 540, 575, 580, 621, 667, 675, 690, 725, 783, 828, 870, 900, 1035, 1044, 1150, 1242, 1305, 1334, 1350, 1380, 1450, 1566, 1725, 1740, 2001, 2070, 2175, 2300, 2484, 2610, 2668, 2700, 2900, 3105, 3132, 3335, 3450, 3915, 4002, 4140, 4350, 5175, 5220, 6003, 6210, 6525, 6670, 6900, 7830, 8004, 8700, 10005, 10350, 12006, 12420, 13050, 13340, 15525, 15660, 16675, 18009, 19575, 20010, 20700, 24012, 26100, 30015, 31050, 33350, 36018, 39150, 40020, 50025, 60030, 62100, 66700, 72036, 78300, 90045, 100050, 120060, 150075, 180090, 200100, 300150, 360180, 450225, 600300, 900450, 1800900]

約数ペア:

[(1, 1800900), (2, 900450), (3, 600300), (4, 450225), (5, 360180), (6, 300150), (9, 200100), (10, 180090), (12, 150075), (15, 120060), (18, 100050), (20, 90045), (23, 78300), (25, 72036), (27, 66700), (29, 62100), (30, 60030), (36, 50025), (45, 40020), (46, 39150), (50, 36018), (54, 33350), (58, 31050), (60, 30015), (69, 26100), (75, 24012), (87, 20700), (90, 20010), (92, 19575), (100, 18009), (108, 16675), (115, 15660), (116, 15525), (135, 13340), (138, 13050), (145, 12420), (150, 12006), (174, 10350), (180, 10005), (207, 8700), (225, 8004), (230, 7830), (261, 6900), (270, 6670), (276, 6525), (290, 6210), (300, 6003), (345, 5220), (348, 5175), (414, 4350), (435, 4140), (450, 4002), (460, 3915), (522, 3450), (540, 3335), (575, 3132), (580, 3105), (621, 2900), (667, 2700), (675, 2668), (690, 2610), (725, 2484), (783, 2300), (828, 2175), (870, 2070), (900, 2001), (1035, 1740), (1044, 1725), (1150, 1566), (1242, 1450), (1305, 1380), (1334, 1350)]