19195820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4423}}^1$

素因数の和:4470

約数の個数: 48

約数和(自身を含む): 47566848

約数和(自身を除く): 28371028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4423, 8846, 17692, 22115, 30961, 44230, 61922, 88460, 123844, 137113, 154805, 274226, 309610, 548452, 619220, 685565, 959791, 1371130, 1919582, 2742260, 3839164, 4798955, 9597910, 19195820]

約数ペア:

[(1, 19195820), (2, 9597910), (4, 4798955), (5, 3839164), (7, 2742260), (10, 1919582), (14, 1371130), (20, 959791), (28, 685565), (31, 619220), (35, 548452), (62, 309610), (70, 274226), (124, 154805), (140, 137113), (155, 123844), (217, 88460), (310, 61922), (434, 44230), (620, 30961), (868, 22115), (1085, 17692), (2170, 8846), (4340, 4423)]