21167389420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{135671}}^1$

素因数の和:135978

約数の個数: 48

約数和(自身を含む): 46155614400

約数和(自身を除く): 24988224980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 269, 290, 538, 580, 1076, 1345, 2690, 5380, 7801, 15602, 31204, 39005, 78010, 135671, 156020, 271342, 542684, 678355, 1356710, 2713420, 3934459, 7868918, 15737836, 19672295, 36495499, 39344590, 72990998, 78689180, 145981996, 182477495, 364954990, 729909980, 1058369471, 2116738942, 4233477884, 5291847355, 10583694710, 21167389420]

約数ペア:

[(1, 21167389420), (2, 10583694710), (4, 5291847355), (5, 4233477884), (10, 2116738942), (20, 1058369471), (29, 729909980), (58, 364954990), (116, 182477495), (145, 145981996), (269, 78689180), (290, 72990998), (538, 39344590), (580, 36495499), (1076, 19672295), (1345, 15737836), (2690, 7868918), (5380, 3934459), (7801, 2713420), (15602, 1356710), (31204, 678355), (39005, 542684), (78010, 271342), (135671, 156020)]