21782512

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1013

約数の個数: 40

約数和(自身を含む): 45036800

約数和(自身を除く): 23254288

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 79, 152, 158, 304, 316, 632, 907, 1264, 1501, 1814, 3002, 3628, 6004, 7256, 12008, 14512, 17233, 24016, 34466, 68932, 71653, 137864, 143306, 275728, 286612, 573224, 1146448, 1361407, 2722814, 5445628, 10891256, 21782512]

約数ペア:

[(1, 21782512), (2, 10891256), (4, 5445628), (8, 2722814), (16, 1361407), (19, 1146448), (38, 573224), (76, 286612), (79, 275728), (152, 143306), (158, 137864), (304, 71653), (316, 68932), (632, 34466), (907, 24016), (1264, 17233), (1501, 14512), (1814, 12008), (3002, 7256), (3628, 6004)]