19921880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2383}}^1$

素因数の和:2424

約数の個数: 64

約数和(自身を含む): 51494400

約数和(自身を除く): 31572520

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2383, 4180, 4766, 8360, 9532, 11915, 19064, 23830, 26213, 45277, 47660, 52426, 90554, 95320, 104852, 131065, 181108, 209704, 226385, 262130, 362216, 452770, 498047, 524260, 905540, 996094, 1048520, 1811080, 1992188, 2490235, 3984376, 4980470, 9960940, 19921880]

約数ペア:

[(1, 19921880), (2, 9960940), (4, 4980470), (5, 3984376), (8, 2490235), (10, 1992188), (11, 1811080), (19, 1048520), (20, 996094), (22, 905540), (38, 524260), (40, 498047), (44, 452770), (55, 362216), (76, 262130), (88, 226385), (95, 209704), (110, 181108), (152, 131065), (190, 104852), (209, 95320), (220, 90554), (380, 52426), (418, 47660), (440, 45277), (760, 26213), (836, 23830), (1045, 19064), (1672, 11915), (2090, 9532), (2383, 8360), (4180, 4766)]