19575550

素因数分解:

$2^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:237

約数の個数: 48

約数和(自身を含む): 37966320

約数和(自身を除く): 18390770

約数列:

[1, 2, 5, 10, 25, 50, 53, 83, 89, 106, 166, 178, 265, 415, 445, 530, 830, 890, 1325, 2075, 2225, 2650, 4150, 4399, 4450, 4717, 7387, 8798, 9434, 14774, 21995, 23585, 36935, 43990, 47170, 73870, 109975, 117925, 184675, 219950, 235850, 369350, 391511, 783022, 1957555, 3915110, 9787775, 19575550]

約数ペア:

[(1, 19575550), (2, 9787775), (5, 3915110), (10, 1957555), (25, 783022), (50, 391511), (53, 369350), (83, 235850), (89, 219950), (106, 184675), (166, 117925), (178, 109975), (265, 73870), (415, 47170), (445, 43990), (530, 36935), (830, 23585), (890, 21995), (1325, 14774), (2075, 9434), (2225, 8798), (2650, 7387), (4150, 4717), (4399, 4450)]