20487952

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:455

約数の個数: 40

約数和(自身を含む): 41170976

約数和(自身を除く): 20683024

約数列:

[1, 2, 4, 8, 16, 43, 86, 97, 172, 194, 307, 344, 388, 614, 688, 776, 1228, 1552, 2456, 4171, 4912, 8342, 13201, 16684, 26402, 29779, 33368, 52804, 59558, 66736, 105608, 119116, 211216, 238232, 476464, 1280497, 2560994, 5121988, 10243976, 20487952]

約数ペア:

[(1, 20487952), (2, 10243976), (4, 5121988), (8, 2560994), (16, 1280497), (43, 476464), (86, 238232), (97, 211216), (172, 119116), (194, 105608), (307, 66736), (344, 59558), (388, 52804), (614, 33368), (688, 29779), (776, 26402), (1228, 16684), (1552, 13201), (2456, 8342), (4171, 4912)]