21666690

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1163}}^1$

素因数の和:1205

約数の個数: 80

約数和(自身を含む): 60844608

約数和(自身を除く): 39177918

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 81, 90, 115, 135, 138, 162, 207, 230, 270, 345, 405, 414, 621, 690, 810, 1035, 1163, 1242, 1863, 2070, 2326, 3105, 3489, 3726, 5815, 6210, 6978, 9315, 10467, 11630, 17445, 18630, 20934, 26749, 31401, 34890, 52335, 53498, 62802, 80247, 94203, 104670, 133745, 157005, 160494, 188406, 240741, 267490, 314010, 401235, 471015, 481482, 722223, 802470, 942030, 1203705, 1444446, 2166669, 2407410, 3611115, 4333338, 7222230, 10833345, 21666690]

約数ペア:

[(1, 21666690), (2, 10833345), (3, 7222230), (5, 4333338), (6, 3611115), (9, 2407410), (10, 2166669), (15, 1444446), (18, 1203705), (23, 942030), (27, 802470), (30, 722223), (45, 481482), (46, 471015), (54, 401235), (69, 314010), (81, 267490), (90, 240741), (115, 188406), (135, 160494), (138, 157005), (162, 133745), (207, 104670), (230, 94203), (270, 80247), (345, 62802), (405, 53498), (414, 52335), (621, 34890), (690, 31401), (810, 26749), (1035, 20934), (1163, 18630), (1242, 17445), (1863, 11630), (2070, 10467), (2326, 9315), (3105, 6978), (3489, 6210), (3726, 5815)]