21990600

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:684

約数の個数: 144

約数和(自身を含む): 77859600

約数和(自身を除く): 55869000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 50, 57, 60, 72, 75, 76, 90, 95, 100, 114, 120, 150, 152, 171, 180, 190, 200, 225, 228, 285, 300, 342, 360, 380, 450, 456, 475, 570, 600, 643, 684, 760, 855, 900, 950, 1140, 1286, 1368, 1425, 1710, 1800, 1900, 1929, 2280, 2572, 2850, 3215, 3420, 3800, 3858, 4275, 5144, 5700, 5787, 6430, 6840, 7716, 8550, 9645, 11400, 11574, 12217, 12860, 15432, 16075, 17100, 19290, 23148, 24434, 25720, 28935, 32150, 34200, 36651, 38580, 46296, 48225, 48868, 57870, 61085, 64300, 73302, 77160, 96450, 97736, 109953, 115740, 122170, 128600, 144675, 146604, 183255, 192900, 219906, 231480, 244340, 289350, 293208, 305425, 366510, 385800, 439812, 488680, 549765, 578700, 610850, 733020, 879624, 916275, 1099530, 1157400, 1221700, 1466040, 1832550, 2199060, 2443400, 2748825, 3665100, 4398120, 5497650, 7330200, 10995300, 21990600]

約数ペア:

[(1, 21990600), (2, 10995300), (3, 7330200), (4, 5497650), (5, 4398120), (6, 3665100), (8, 2748825), (9, 2443400), (10, 2199060), (12, 1832550), (15, 1466040), (18, 1221700), (19, 1157400), (20, 1099530), (24, 916275), (25, 879624), (30, 733020), (36, 610850), (38, 578700), (40, 549765), (45, 488680), (50, 439812), (57, 385800), (60, 366510), (72, 305425), (75, 293208), (76, 289350), (90, 244340), (95, 231480), (100, 219906), (114, 192900), (120, 183255), (150, 146604), (152, 144675), (171, 128600), (180, 122170), (190, 115740), (200, 109953), (225, 97736), (228, 96450), (285, 77160), (300, 73302), (342, 64300), (360, 61085), (380, 57870), (450, 48868), (456, 48225), (475, 46296), (570, 38580), (600, 36651), (643, 34200), (684, 32150), (760, 28935), (855, 25720), (900, 24434), (950, 23148), (1140, 19290), (1286, 17100), (1368, 16075), (1425, 15432), (1710, 12860), (1800, 12217), (1900, 11574), (1929, 11400), (2280, 9645), (2572, 8550), (2850, 7716), (3215, 6840), (3420, 6430), (3800, 5787), (3858, 5700), (4275, 5144)]