21977920

素因数分解:

$2^6\times 5^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:587

約数の個数: 56

約数和(自身を含む): 52770024

約数和(自身を除く): 30792104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 173, 320, 346, 397, 692, 794, 865, 1384, 1588, 1730, 1985, 2768, 3176, 3460, 3970, 5536, 6352, 6920, 7940, 11072, 12704, 13840, 15880, 25408, 27680, 31760, 55360, 63520, 68681, 127040, 137362, 274724, 343405, 549448, 686810, 1098896, 1373620, 2197792, 2747240, 4395584, 5494480, 10988960, 21977920]

約数ペア:

[(1, 21977920), (2, 10988960), (4, 5494480), (5, 4395584), (8, 2747240), (10, 2197792), (16, 1373620), (20, 1098896), (32, 686810), (40, 549448), (64, 343405), (80, 274724), (160, 137362), (173, 127040), (320, 68681), (346, 63520), (397, 55360), (692, 31760), (794, 27680), (865, 25408), (1384, 15880), (1588, 13840), (1730, 12704), (1985, 11072), (2768, 7940), (3176, 6920), (3460, 6352), (3970, 5536)]