81662420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3623}}^1$

素因数の和:3669

約数の個数: 72

約数和(自身を含む): 208220544

約数和(自身を除く): 126558124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 3623, 4508, 5635, 7246, 11270, 14492, 18115, 22540, 25361, 36230, 50722, 72460, 83329, 101444, 126805, 166658, 177527, 253610, 333316, 355054, 416645, 507220, 583303, 710108, 833290, 887635, 1166606, 1666580, 1775270, 2333212, 2916515, 3550540, 4083121, 5833030, 8166242, 11666060, 16332484, 20415605, 40831210, 81662420]

約数ペア:

[(1, 81662420), (2, 40831210), (4, 20415605), (5, 16332484), (7, 11666060), (10, 8166242), (14, 5833030), (20, 4083121), (23, 3550540), (28, 2916515), (35, 2333212), (46, 1775270), (49, 1666580), (70, 1166606), (92, 887635), (98, 833290), (115, 710108), (140, 583303), (161, 507220), (196, 416645), (230, 355054), (245, 333316), (322, 253610), (460, 177527), (490, 166658), (644, 126805), (805, 101444), (980, 83329), (1127, 72460), (1610, 50722), (2254, 36230), (3220, 25361), (3623, 22540), (4508, 18115), (5635, 14492), (7246, 11270)]