21740560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14303}}^1$

素因数の和:14335

約数の個数: 40

約数和(自身を含む): 53210880

約数和(自身を除く): 31470320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14303, 28606, 57212, 71515, 114424, 143030, 228848, 271757, 286060, 543514, 572120, 1087028, 1144240, 1358785, 2174056, 2717570, 4348112, 5435140, 10870280, 21740560]

約数ペア:

[(1, 21740560), (2, 10870280), (4, 5435140), (5, 4348112), (8, 2717570), (10, 2174056), (16, 1358785), (19, 1144240), (20, 1087028), (38, 572120), (40, 543514), (76, 286060), (80, 271757), (95, 228848), (152, 143030), (190, 114424), (304, 71515), (380, 57212), (760, 28606), (1520, 14303)]