21980480

素因数分解:

$2^6\times 5^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:627

約数の個数: 56

約数和(自身を含む): 52806600

約数和(自身を除く): 30826120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 149, 160, 298, 320, 461, 596, 745, 922, 1192, 1490, 1844, 2305, 2384, 2980, 3688, 4610, 4768, 5960, 7376, 9220, 9536, 11920, 14752, 18440, 23840, 29504, 36880, 47680, 68689, 73760, 137378, 147520, 274756, 343445, 549512, 686890, 1099024, 1373780, 2198048, 2747560, 4396096, 5495120, 10990240, 21980480]

約数ペア:

[(1, 21980480), (2, 10990240), (4, 5495120), (5, 4396096), (8, 2747560), (10, 2198048), (16, 1373780), (20, 1099024), (32, 686890), (40, 549512), (64, 343445), (80, 274756), (149, 147520), (160, 137378), (298, 73760), (320, 68689), (461, 47680), (596, 36880), (745, 29504), (922, 23840), (1192, 18440), (1490, 14752), (1844, 11920), (2305, 9536), (2384, 9220), (2980, 7376), (3688, 5960), (4610, 4768)]