20694128

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:322

約数の個数: 80

約数和(自身を含む): 50371776

約数和(自身を除く): 29677648

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 61, 91, 104, 112, 122, 182, 208, 233, 244, 364, 427, 466, 488, 728, 793, 854, 932, 976, 1456, 1586, 1631, 1708, 1864, 3029, 3172, 3262, 3416, 3728, 5551, 6058, 6344, 6524, 6832, 11102, 12116, 12688, 13048, 14213, 21203, 22204, 24232, 26096, 28426, 42406, 44408, 48464, 56852, 84812, 88816, 99491, 113704, 169624, 184769, 198982, 227408, 339248, 369538, 397964, 739076, 795928, 1293383, 1478152, 1591856, 2586766, 2956304, 5173532, 10347064, 20694128]

約数ペア:

[(1, 20694128), (2, 10347064), (4, 5173532), (7, 2956304), (8, 2586766), (13, 1591856), (14, 1478152), (16, 1293383), (26, 795928), (28, 739076), (52, 397964), (56, 369538), (61, 339248), (91, 227408), (104, 198982), (112, 184769), (122, 169624), (182, 113704), (208, 99491), (233, 88816), (244, 84812), (364, 56852), (427, 48464), (466, 44408), (488, 42406), (728, 28426), (793, 26096), (854, 24232), (932, 22204), (976, 21203), (1456, 14213), (1586, 13048), (1631, 12688), (1708, 12116), (1864, 11102), (3029, 6832), (3172, 6524), (3262, 6344), (3416, 6058), (3728, 5551)]