21247860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 63141120

約数和(自身を除く): 41893260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 89, 92, 115, 138, 173, 178, 230, 267, 276, 345, 346, 356, 445, 460, 519, 534, 690, 692, 865, 890, 1038, 1068, 1335, 1380, 1730, 1780, 2047, 2076, 2595, 2670, 3460, 3979, 4094, 5190, 5340, 6141, 7958, 8188, 10235, 10380, 11937, 12282, 15397, 15916, 19895, 20470, 23874, 24564, 30705, 30794, 39790, 40940, 46191, 47748, 59685, 61410, 61588, 76985, 79580, 92382, 119370, 122820, 153970, 184764, 230955, 238740, 307940, 354131, 461910, 708262, 923820, 1062393, 1416524, 1770655, 2124786, 3541310, 4249572, 5311965, 7082620, 10623930, 21247860]

約数ペア:

[(1, 21247860), (2, 10623930), (3, 7082620), (4, 5311965), (5, 4249572), (6, 3541310), (10, 2124786), (12, 1770655), (15, 1416524), (20, 1062393), (23, 923820), (30, 708262), (46, 461910), (60, 354131), (69, 307940), (89, 238740), (92, 230955), (115, 184764), (138, 153970), (173, 122820), (178, 119370), (230, 92382), (267, 79580), (276, 76985), (345, 61588), (346, 61410), (356, 59685), (445, 47748), (460, 46191), (519, 40940), (534, 39790), (690, 30794), (692, 30705), (865, 24564), (890, 23874), (1038, 20470), (1068, 19895), (1335, 15916), (1380, 15397), (1730, 12282), (1780, 11937), (2047, 10380), (2076, 10235), (2595, 8188), (2670, 7958), (3460, 6141), (3979, 5340), (4094, 5190)]