18439520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10477}}^1$

素因数の和:10503

約数の個数: 48

約数和(自身を含む): 47528208

約数和(自身を除く): 29088688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 10477, 20954, 41908, 52385, 83816, 104770, 115247, 167632, 209540, 230494, 335264, 419080, 460988, 576235, 838160, 921976, 1152470, 1676320, 1843952, 2304940, 3687904, 4609880, 9219760, 18439520]

約数ペア:

[(1, 18439520), (2, 9219760), (4, 4609880), (5, 3687904), (8, 2304940), (10, 1843952), (11, 1676320), (16, 1152470), (20, 921976), (22, 838160), (32, 576235), (40, 460988), (44, 419080), (55, 335264), (80, 230494), (88, 209540), (110, 167632), (160, 115247), (176, 104770), (220, 83816), (352, 52385), (440, 41908), (880, 20954), (1760, 10477)]