19757168

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:753

約数の個数: 40

約数和(自身を含む): 40223616

約数和(自身を除く): 20466448

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 488, 496, 653, 976, 1306, 1891, 2612, 3782, 5224, 7564, 10448, 15128, 20243, 30256, 39833, 40486, 79666, 80972, 159332, 161944, 318664, 323888, 637328, 1234823, 2469646, 4939292, 9878584, 19757168]

約数ペア:

[(1, 19757168), (2, 9878584), (4, 4939292), (8, 2469646), (16, 1234823), (31, 637328), (61, 323888), (62, 318664), (122, 161944), (124, 159332), (244, 80972), (248, 79666), (488, 40486), (496, 39833), (653, 30256), (976, 20243), (1306, 15128), (1891, 10448), (2612, 7564), (3782, 5224)]