21639856

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1913}}^1$

素因数の和:2029

約数の個数: 40

約数和(自身を含む): 48416544

約数和(自身を除く): 26776688

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1616, 1913, 2828, 3826, 5656, 7652, 11312, 13391, 15304, 26782, 30608, 53564, 107128, 193213, 214256, 386426, 772852, 1352491, 1545704, 2704982, 3091408, 5409964, 10819928, 21639856]

約数ペア:

[(1, 21639856), (2, 10819928), (4, 5409964), (7, 3091408), (8, 2704982), (14, 1545704), (16, 1352491), (28, 772852), (56, 386426), (101, 214256), (112, 193213), (202, 107128), (404, 53564), (707, 30608), (808, 26782), (1414, 15304), (1616, 13391), (1913, 11312), (2828, 7652), (3826, 5656)]