21109914

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{701}}^1$

素因数の和:955

約数の個数: 48

約数和(自身を含む): 52565760

約数和(自身を除く): 31455846

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 239, 478, 701, 717, 1402, 1434, 1673, 2103, 2151, 3346, 4206, 4302, 4907, 5019, 6309, 9814, 10038, 12618, 14721, 15057, 29442, 30114, 44163, 88326, 167539, 335078, 502617, 1005234, 1172773, 1507851, 2345546, 3015702, 3518319, 7036638, 10554957, 21109914]

約数ペア:

[(1, 21109914), (2, 10554957), (3, 7036638), (6, 3518319), (7, 3015702), (9, 2345546), (14, 1507851), (18, 1172773), (21, 1005234), (42, 502617), (63, 335078), (126, 167539), (239, 88326), (478, 44163), (701, 30114), (717, 29442), (1402, 15057), (1434, 14721), (1673, 12618), (2103, 10038), (2151, 9814), (3346, 6309), (4206, 5019), (4302, 4907)]