21112800

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{463}}^1$

素因数の和:505

約数の個数: 144

約数和(自身を含む): 72495360

約数和(自身を除く): 51382560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 25, 30, 32, 38, 40, 48, 50, 57, 60, 75, 76, 80, 95, 96, 100, 114, 120, 150, 152, 160, 190, 200, 228, 240, 285, 300, 304, 380, 400, 456, 463, 475, 480, 570, 600, 608, 760, 800, 912, 926, 950, 1140, 1200, 1389, 1425, 1520, 1824, 1852, 1900, 2280, 2315, 2400, 2778, 2850, 3040, 3704, 3800, 4560, 4630, 5556, 5700, 6945, 7408, 7600, 8797, 9120, 9260, 11112, 11400, 11575, 13890, 14816, 15200, 17594, 18520, 22224, 22800, 23150, 26391, 27780, 34725, 35188, 37040, 43985, 44448, 45600, 46300, 52782, 55560, 69450, 70376, 74080, 87970, 92600, 105564, 111120, 131955, 138900, 140752, 175940, 185200, 211128, 219925, 222240, 263910, 277800, 281504, 351880, 370400, 422256, 439850, 527820, 555600, 659775, 703760, 844512, 879700, 1055640, 1111200, 1319550, 1407520, 1759400, 2111280, 2639100, 3518800, 4222560, 5278200, 7037600, 10556400, 21112800]

約数ペア:

[(1, 21112800), (2, 10556400), (3, 7037600), (4, 5278200), (5, 4222560), (6, 3518800), (8, 2639100), (10, 2111280), (12, 1759400), (15, 1407520), (16, 1319550), (19, 1111200), (20, 1055640), (24, 879700), (25, 844512), (30, 703760), (32, 659775), (38, 555600), (40, 527820), (48, 439850), (50, 422256), (57, 370400), (60, 351880), (75, 281504), (76, 277800), (80, 263910), (95, 222240), (96, 219925), (100, 211128), (114, 185200), (120, 175940), (150, 140752), (152, 138900), (160, 131955), (190, 111120), (200, 105564), (228, 92600), (240, 87970), (285, 74080), (300, 70376), (304, 69450), (380, 55560), (400, 52782), (456, 46300), (463, 45600), (475, 44448), (480, 43985), (570, 37040), (600, 35188), (608, 34725), (760, 27780), (800, 26391), (912, 23150), (926, 22800), (950, 22224), (1140, 18520), (1200, 17594), (1389, 15200), (1425, 14816), (1520, 13890), (1824, 11575), (1852, 11400), (1900, 11112), (2280, 9260), (2315, 9120), (2400, 8797), (2778, 7600), (2850, 7408), (3040, 6945), (3704, 5700), (3800, 5556), (4560, 4630)]