5321440

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 12761280

約数和(自身を除く): 7439840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 421, 632, 790, 842, 1264, 1580, 1684, 2105, 2528, 3160, 3368, 4210, 6320, 6736, 8420, 12640, 13472, 16840, 33259, 33680, 66518, 67360, 133036, 166295, 266072, 332590, 532144, 665180, 1064288, 1330360, 2660720, 5321440]

約数ペア:

[(1, 5321440), (2, 2660720), (4, 1330360), (5, 1064288), (8, 665180), (10, 532144), (16, 332590), (20, 266072), (32, 166295), (40, 133036), (79, 67360), (80, 66518), (158, 33680), (160, 33259), (316, 16840), (395, 13472), (421, 12640), (632, 8420), (790, 6736), (842, 6320), (1264, 4210), (1580, 3368), (1684, 3160), (2105, 2528)]