9900900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:235

約数の個数: 144

約数和(自身を含む): 33678400

約数和(自身を除く): 23777500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 27, 30, 36, 38, 45, 50, 54, 57, 60, 75, 76, 90, 95, 100, 108, 114, 135, 150, 171, 180, 190, 193, 225, 228, 270, 285, 300, 342, 380, 386, 450, 475, 513, 540, 570, 579, 675, 684, 772, 855, 900, 950, 965, 1026, 1140, 1158, 1350, 1425, 1710, 1737, 1900, 1930, 2052, 2316, 2565, 2700, 2850, 2895, 3420, 3474, 3667, 3860, 4275, 4825, 5130, 5211, 5700, 5790, 6948, 7334, 8550, 8685, 9650, 10260, 10422, 11001, 11580, 12825, 14475, 14668, 17100, 17370, 18335, 19300, 20844, 22002, 25650, 26055, 28950, 33003, 34740, 36670, 43425, 44004, 51300, 52110, 55005, 57900, 66006, 73340, 86850, 91675, 99009, 104220, 110010, 130275, 132012, 165015, 173700, 183350, 198018, 220020, 260550, 275025, 330030, 366700, 396036, 495045, 521100, 550050, 660060, 825075, 990090, 1100100, 1650150, 1980180, 2475225, 3300300, 4950450, 9900900]

約数ペア:

[(1, 9900900), (2, 4950450), (3, 3300300), (4, 2475225), (5, 1980180), (6, 1650150), (9, 1100100), (10, 990090), (12, 825075), (15, 660060), (18, 550050), (19, 521100), (20, 495045), (25, 396036), (27, 366700), (30, 330030), (36, 275025), (38, 260550), (45, 220020), (50, 198018), (54, 183350), (57, 173700), (60, 165015), (75, 132012), (76, 130275), (90, 110010), (95, 104220), (100, 99009), (108, 91675), (114, 86850), (135, 73340), (150, 66006), (171, 57900), (180, 55005), (190, 52110), (193, 51300), (225, 44004), (228, 43425), (270, 36670), (285, 34740), (300, 33003), (342, 28950), (380, 26055), (386, 25650), (450, 22002), (475, 20844), (513, 19300), (540, 18335), (570, 17370), (579, 17100), (675, 14668), (684, 14475), (772, 12825), (855, 11580), (900, 11001), (950, 10422), (965, 10260), (1026, 9650), (1140, 8685), (1158, 8550), (1350, 7334), (1425, 6948), (1710, 5790), (1737, 5700), (1900, 5211), (1930, 5130), (2052, 4825), (2316, 4275), (2565, 3860), (2700, 3667), (2850, 3474), (2895, 3420)]