19978704

素因数分解:

$2^4\times 3^3\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:569

約数の個数: 80

約数和(自身を含む): 58032000

約数和(自身を除く): 38053296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 103, 108, 144, 206, 216, 309, 412, 432, 449, 618, 824, 898, 927, 1236, 1347, 1648, 1796, 1854, 2472, 2694, 2781, 3592, 3708, 4041, 4944, 5388, 5562, 7184, 7416, 8082, 10776, 11124, 12123, 14832, 16164, 21552, 22248, 24246, 32328, 44496, 46247, 48492, 64656, 92494, 96984, 138741, 184988, 193968, 277482, 369976, 416223, 554964, 739952, 832446, 1109928, 1248669, 1664892, 2219856, 2497338, 3329784, 4994676, 6659568, 9989352, 19978704]

約数ペア:

[(1, 19978704), (2, 9989352), (3, 6659568), (4, 4994676), (6, 3329784), (8, 2497338), (9, 2219856), (12, 1664892), (16, 1248669), (18, 1109928), (24, 832446), (27, 739952), (36, 554964), (48, 416223), (54, 369976), (72, 277482), (103, 193968), (108, 184988), (144, 138741), (206, 96984), (216, 92494), (309, 64656), (412, 48492), (432, 46247), (449, 44496), (618, 32328), (824, 24246), (898, 22248), (927, 21552), (1236, 16164), (1347, 14832), (1648, 12123), (1796, 11124), (1854, 10776), (2472, 8082), (2694, 7416), (2781, 7184), (3592, 5562), (3708, 5388), (4041, 4944)]