28890680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7937}}^1$

素因数の和:7968

約数の個数: 64

約数和(自身を含む): 80015040

約数和(自身を除く): 51124360

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7937, 15874, 31748, 39685, 55559, 63496, 79370, 103181, 111118, 158740, 206362, 222236, 277795, 317480, 412724, 444472, 515905, 555590, 722267, 825448, 1031810, 1111180, 1444534, 2063620, 2222360, 2889068, 3611335, 4127240, 5778136, 7222670, 14445340, 28890680]

約数ペア:

[(1, 28890680), (2, 14445340), (4, 7222670), (5, 5778136), (7, 4127240), (8, 3611335), (10, 2889068), (13, 2222360), (14, 2063620), (20, 1444534), (26, 1111180), (28, 1031810), (35, 825448), (40, 722267), (52, 555590), (56, 515905), (65, 444472), (70, 412724), (91, 317480), (104, 277795), (130, 222236), (140, 206362), (182, 158740), (260, 111118), (280, 103181), (364, 79370), (455, 63496), (520, 55559), (728, 39685), (910, 31748), (1820, 15874), (3640, 7937)]