20403872

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{907}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 43475040

約数和(自身を除く): 23071168

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 907, 1184, 1406, 1814, 2812, 3628, 5624, 7256, 11248, 14512, 17233, 22496, 29024, 33559, 34466, 67118, 68932, 134236, 137864, 268472, 275728, 536944, 551456, 637621, 1073888, 1275242, 2550484, 5100968, 10201936, 20403872]

約数ペア:

[(1, 20403872), (2, 10201936), (4, 5100968), (8, 2550484), (16, 1275242), (19, 1073888), (32, 637621), (37, 551456), (38, 536944), (74, 275728), (76, 268472), (148, 137864), (152, 134236), (296, 68932), (304, 67118), (592, 34466), (608, 33559), (703, 29024), (907, 22496), (1184, 17233), (1406, 14512), (1814, 11248), (2812, 7256), (3628, 5624)]