397757900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^2\times {\mathrm{4139}}^1$

素因数の和:4215

約数の個数: 54

約数和(自身を含む): 892091340

約数和(自身を除く): 494333440

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 961, 1550, 1922, 3100, 3844, 4139, 4805, 8278, 9610, 16556, 19220, 20695, 24025, 41390, 48050, 82780, 96100, 103475, 128309, 206950, 256618, 413900, 513236, 641545, 1283090, 2566180, 3207725, 3977579, 6415450, 7955158, 12830900, 15910316, 19887895, 39775790, 79551580, 99439475, 198878950, 397757900]

約数ペア:

[(1, 397757900), (2, 198878950), (4, 99439475), (5, 79551580), (10, 39775790), (20, 19887895), (25, 15910316), (31, 12830900), (50, 7955158), (62, 6415450), (100, 3977579), (124, 3207725), (155, 2566180), (310, 1283090), (620, 641545), (775, 513236), (961, 413900), (1550, 256618), (1922, 206950), (3100, 128309), (3844, 103475), (4139, 96100), (4805, 82780), (8278, 48050), (9610, 41390), (16556, 24025), (19220, 20695)]