21691160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28541}}^1$

素因数の和:28571

約数の個数: 32

約数和(自身を含む): 51375600

約数和(自身を除く): 29684440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28541, 57082, 114164, 142705, 228328, 285410, 542279, 570820, 1084558, 1141640, 2169116, 2711395, 4338232, 5422790, 10845580, 21691160]

約数ペア:

[(1, 21691160), (2, 10845580), (4, 5422790), (5, 4338232), (8, 2711395), (10, 2169116), (19, 1141640), (20, 1084558), (38, 570820), (40, 542279), (76, 285410), (95, 228328), (152, 142705), (190, 114164), (380, 57082), (760, 28541)]