20115431180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{389}}^1\times {\mathrm{15299}}^1$

素因数の和:15723

約数の個数: 72

約数和(自身を含む): 45862362000

約数和(自身を除く): 25746930820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 389, 676, 778, 845, 1556, 1690, 1945, 3380, 3890, 5057, 7780, 10114, 15299, 20228, 25285, 30598, 50570, 61196, 65741, 76495, 101140, 131482, 152990, 198887, 262964, 305980, 328705, 397774, 657410, 795548, 994435, 1314820, 1988870, 2585531, 3977740, 5171062, 5951311, 10342124, 11902622, 12927655, 23805244, 25855310, 29756555, 51710620, 59513110, 77367043, 119026220, 154734086, 309468172, 386835215, 773670430, 1005771559, 1547340860, 2011543118, 4023086236, 5028857795, 10057715590, 20115431180]

約数ペア:

[(1, 20115431180), (2, 10057715590), (4, 5028857795), (5, 4023086236), (10, 2011543118), (13, 1547340860), (20, 1005771559), (26, 773670430), (52, 386835215), (65, 309468172), (130, 154734086), (169, 119026220), (260, 77367043), (338, 59513110), (389, 51710620), (676, 29756555), (778, 25855310), (845, 23805244), (1556, 12927655), (1690, 11902622), (1945, 10342124), (3380, 5951311), (3890, 5171062), (5057, 3977740), (7780, 2585531), (10114, 1988870), (15299, 1314820), (20228, 994435), (25285, 795548), (30598, 657410), (50570, 397774), (61196, 328705), (65741, 305980), (76495, 262964), (101140, 198887), (131482, 152990)]