20945600

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:107

約数の個数: 168

約数和(自身を含む): 59527440

約数和(自身を除く): 38581840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 53, 64, 65, 76, 80, 95, 100, 104, 106, 130, 152, 160, 190, 200, 208, 212, 247, 260, 265, 304, 320, 325, 380, 400, 416, 424, 475, 494, 520, 530, 608, 650, 689, 760, 800, 832, 848, 950, 988, 1007, 1040, 1060, 1216, 1235, 1300, 1325, 1378, 1520, 1600, 1696, 1900, 1976, 2014, 2080, 2120, 2470, 2600, 2650, 2756, 3040, 3392, 3445, 3800, 3952, 4028, 4160, 4240, 4940, 5035, 5200, 5300, 5512, 6080, 6175, 6890, 7600, 7904, 8056, 8480, 9880, 10070, 10400, 10600, 11024, 12350, 13091, 13780, 15200, 15808, 16112, 16960, 17225, 19760, 20140, 20800, 21200, 22048, 24700, 25175, 26182, 27560, 30400, 32224, 34450, 39520, 40280, 42400, 44096, 49400, 50350, 52364, 55120, 64448, 65455, 68900, 79040, 80560, 84800, 98800, 100700, 104728, 110240, 130910, 137800, 161120, 197600, 201400, 209456, 220480, 261820, 275600, 322240, 327275, 395200, 402800, 418912, 523640, 551200, 654550, 805600, 837824, 1047280, 1102400, 1309100, 1611200, 2094560, 2618200, 4189120, 5236400, 10472800, 20945600]

約数ペア:

[(1, 20945600), (2, 10472800), (4, 5236400), (5, 4189120), (8, 2618200), (10, 2094560), (13, 1611200), (16, 1309100), (19, 1102400), (20, 1047280), (25, 837824), (26, 805600), (32, 654550), (38, 551200), (40, 523640), (50, 418912), (52, 402800), (53, 395200), (64, 327275), (65, 322240), (76, 275600), (80, 261820), (95, 220480), (100, 209456), (104, 201400), (106, 197600), (130, 161120), (152, 137800), (160, 130910), (190, 110240), (200, 104728), (208, 100700), (212, 98800), (247, 84800), (260, 80560), (265, 79040), (304, 68900), (320, 65455), (325, 64448), (380, 55120), (400, 52364), (416, 50350), (424, 49400), (475, 44096), (494, 42400), (520, 40280), (530, 39520), (608, 34450), (650, 32224), (689, 30400), (760, 27560), (800, 26182), (832, 25175), (848, 24700), (950, 22048), (988, 21200), (1007, 20800), (1040, 20140), (1060, 19760), (1216, 17225), (1235, 16960), (1300, 16112), (1325, 15808), (1378, 15200), (1520, 13780), (1600, 13091), (1696, 12350), (1900, 11024), (1976, 10600), (2014, 10400), (2080, 10070), (2120, 9880), (2470, 8480), (2600, 8056), (2650, 7904), (2756, 7600), (3040, 6890), (3392, 6175), (3445, 6080), (3800, 5512), (3952, 5300), (4028, 5200), (4160, 5035), (4240, 4940)]