21946520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 30930280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 431, 536, 670, 760, 862, 1273, 1340, 1724, 2155, 2546, 2680, 3448, 4310, 5092, 6365, 8189, 8620, 10184, 12730, 16378, 17240, 25460, 28877, 32756, 40945, 50920, 57754, 65512, 81890, 115508, 144385, 163780, 231016, 288770, 327560, 548663, 577540, 1097326, 1155080, 2194652, 2743315, 4389304, 5486630, 10973260, 21946520]

約数ペア:

[(1, 21946520), (2, 10973260), (4, 5486630), (5, 4389304), (8, 2743315), (10, 2194652), (19, 1155080), (20, 1097326), (38, 577540), (40, 548663), (67, 327560), (76, 288770), (95, 231016), (134, 163780), (152, 144385), (190, 115508), (268, 81890), (335, 65512), (380, 57754), (431, 50920), (536, 40945), (670, 32756), (760, 28877), (862, 25460), (1273, 17240), (1340, 16378), (1724, 12730), (2155, 10184), (2546, 8620), (2680, 8189), (3448, 6365), (4310, 5092)]