81363520

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{5189}}^1$

素因数の和:5220

約数の個数: 84

約数和(自身を含む): 225422460

約数和(自身を除く): 144058940

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1568, 1960, 2240, 3136, 3920, 5189, 7840, 10378, 15680, 20756, 25945, 36323, 41512, 51890, 72646, 83024, 103780, 145292, 166048, 181615, 207560, 254261, 290584, 332096, 363230, 415120, 508522, 581168, 726460, 830240, 1017044, 1162336, 1271305, 1452920, 1660480, 2034088, 2324672, 2542610, 2905840, 4068176, 5085220, 5811680, 8136352, 10170440, 11623360, 16272704, 20340880, 40681760, 81363520]

約数ペア:

[(1, 81363520), (2, 40681760), (4, 20340880), (5, 16272704), (7, 11623360), (8, 10170440), (10, 8136352), (14, 5811680), (16, 5085220), (20, 4068176), (28, 2905840), (32, 2542610), (35, 2324672), (40, 2034088), (49, 1660480), (56, 1452920), (64, 1271305), (70, 1162336), (80, 1017044), (98, 830240), (112, 726460), (140, 581168), (160, 508522), (196, 415120), (224, 363230), (245, 332096), (280, 290584), (320, 254261), (392, 207560), (448, 181615), (490, 166048), (560, 145292), (784, 103780), (980, 83024), (1120, 72646), (1568, 51890), (1960, 41512), (2240, 36323), (3136, 25945), (3920, 20756), (5189, 15680), (7840, 10378)]