20691030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:381

約数の個数: 64

約数和(自身を含む): 52420608

約数和(自身を除く): 31729578

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 157, 191, 230, 314, 345, 382, 471, 573, 690, 785, 942, 955, 1146, 1570, 1910, 2355, 2865, 3611, 4393, 4710, 5730, 7222, 8786, 10833, 13179, 18055, 21666, 21965, 26358, 29987, 36110, 43930, 54165, 59974, 65895, 89961, 108330, 131790, 149935, 179922, 299870, 449805, 689701, 899610, 1379402, 2069103, 3448505, 4138206, 6897010, 10345515, 20691030]

約数ペア:

[(1, 20691030), (2, 10345515), (3, 6897010), (5, 4138206), (6, 3448505), (10, 2069103), (15, 1379402), (23, 899610), (30, 689701), (46, 449805), (69, 299870), (115, 179922), (138, 149935), (157, 131790), (191, 108330), (230, 89961), (314, 65895), (345, 59974), (382, 54165), (471, 43930), (573, 36110), (690, 29987), (785, 26358), (942, 21965), (955, 21666), (1146, 18055), (1570, 13179), (1910, 10833), (2355, 8786), (2865, 7222), (3611, 5730), (4393, 4710)]