20948564

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 47960640

約数和(自身を除く): 27012076

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 169, 182, 233, 247, 266, 338, 364, 466, 494, 532, 676, 932, 988, 1183, 1631, 1729, 2366, 3029, 3211, 3262, 3458, 4427, 4732, 6058, 6422, 6524, 6916, 8854, 12116, 12844, 17708, 21203, 22477, 30989, 39377, 42406, 44954, 57551, 61978, 78754, 84812, 89908, 115102, 123956, 157508, 230204, 275639, 402857, 551278, 748163, 805714, 1102556, 1496326, 1611428, 2992652, 5237141, 10474282, 20948564]

約数ペア:

[(1, 20948564), (2, 10474282), (4, 5237141), (7, 2992652), (13, 1611428), (14, 1496326), (19, 1102556), (26, 805714), (28, 748163), (38, 551278), (52, 402857), (76, 275639), (91, 230204), (133, 157508), (169, 123956), (182, 115102), (233, 89908), (247, 84812), (266, 78754), (338, 61978), (364, 57551), (466, 44954), (494, 42406), (532, 39377), (676, 30989), (932, 22477), (988, 21203), (1183, 17708), (1631, 12844), (1729, 12116), (2366, 8854), (3029, 6916), (3211, 6524), (3262, 6422), (3458, 6058), (4427, 4732)]