291212450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{2111}}^1$

素因数の和:2243

約数の個数: 48

約数和(自身を含む): 565678080

約数和(自身を除く): 274465630

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 89, 155, 178, 310, 445, 775, 890, 1550, 2111, 2225, 2759, 4222, 4450, 5518, 10555, 13795, 21110, 27590, 52775, 65441, 68975, 105550, 130882, 137950, 187879, 327205, 375758, 654410, 939395, 1636025, 1878790, 3272050, 4696975, 5824249, 9393950, 11648498, 29121245, 58242490, 145606225, 291212450]

約数ペア:

[(1, 291212450), (2, 145606225), (5, 58242490), (10, 29121245), (25, 11648498), (31, 9393950), (50, 5824249), (62, 4696975), (89, 3272050), (155, 1878790), (178, 1636025), (310, 939395), (445, 654410), (775, 375758), (890, 327205), (1550, 187879), (2111, 137950), (2225, 130882), (2759, 105550), (4222, 68975), (4450, 65441), (5518, 52775), (10555, 27590), (13795, 21110)]