20443240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:794

約数の個数: 64

約数和(自身を含む): 49795200

約数和(自身を除く): 29351960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 703, 727, 740, 760, 1406, 1454, 1480, 2812, 2908, 3515, 3635, 5624, 5816, 7030, 7270, 13813, 14060, 14540, 26899, 27626, 28120, 29080, 53798, 55252, 69065, 107596, 110504, 134495, 138130, 215192, 268990, 276260, 511081, 537980, 552520, 1022162, 1075960, 2044324, 2555405, 4088648, 5110810, 10221620, 20443240]

約数ペア:

[(1, 20443240), (2, 10221620), (4, 5110810), (5, 4088648), (8, 2555405), (10, 2044324), (19, 1075960), (20, 1022162), (37, 552520), (38, 537980), (40, 511081), (74, 276260), (76, 268990), (95, 215192), (148, 138130), (152, 134495), (185, 110504), (190, 107596), (296, 69065), (370, 55252), (380, 53798), (703, 29080), (727, 28120), (740, 27626), (760, 26899), (1406, 14540), (1454, 14060), (1480, 13813), (2812, 7270), (2908, 7030), (3515, 5816), (3635, 5624)]