28021917

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 21744483

約数列:

[1, 3, 7, 11, 21, 29, 33, 47, 77, 87, 89, 141, 203, 231, 267, 319, 329, 517, 609, 623, 957, 979, 987, 1363, 1551, 1869, 2233, 2581, 2937, 3619, 4089, 4183, 6699, 6853, 7743, 9541, 10857, 12549, 14993, 18067, 20559, 28391, 28623, 29281, 44979, 46013, 54201, 85173, 87843, 104951, 121307, 138039, 198737, 314853, 322091, 363921, 596211, 849149, 966273, 1334377, 2547447, 4003131, 9340639, 28021917]

約数ペア:

[(1, 28021917), (3, 9340639), (7, 4003131), (11, 2547447), (21, 1334377), (29, 966273), (33, 849149), (47, 596211), (77, 363921), (87, 322091), (89, 314853), (141, 198737), (203, 138039), (231, 121307), (267, 104951), (319, 87843), (329, 85173), (517, 54201), (609, 46013), (623, 44979), (957, 29281), (979, 28623), (987, 28391), (1363, 20559), (1551, 18067), (1869, 14993), (2233, 12549), (2581, 10857), (2937, 9541), (3619, 7743), (4089, 6853), (4183, 6699)]