19991124

素因数分解:

$2^2\times 3^5\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 53141088

約数和(自身を除く): 33149964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 131, 157, 162, 243, 262, 314, 324, 393, 471, 486, 524, 628, 786, 942, 972, 1179, 1413, 1572, 1884, 2358, 2826, 3537, 4239, 4716, 5652, 7074, 8478, 10611, 12717, 14148, 16956, 20567, 21222, 25434, 31833, 38151, 41134, 42444, 50868, 61701, 63666, 76302, 82268, 123402, 127332, 152604, 185103, 246804, 370206, 555309, 740412, 1110618, 1665927, 2221236, 3331854, 4997781, 6663708, 9995562, 19991124]

約数ペア:

[(1, 19991124), (2, 9995562), (3, 6663708), (4, 4997781), (6, 3331854), (9, 2221236), (12, 1665927), (18, 1110618), (27, 740412), (36, 555309), (54, 370206), (81, 246804), (108, 185103), (131, 152604), (157, 127332), (162, 123402), (243, 82268), (262, 76302), (314, 63666), (324, 61701), (393, 50868), (471, 42444), (486, 41134), (524, 38151), (628, 31833), (786, 25434), (942, 21222), (972, 20567), (1179, 16956), (1413, 14148), (1572, 12717), (1884, 10611), (2358, 8478), (2826, 7074), (3537, 5652), (4239, 4716)]