20991802750

素因数分解:

$2^1\times 5^3\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{10091}}^1$

素因数の和:10318

約数の個数: 64

約数和(自身を含む): 40297113792

約数和(自身を除く): 19305311042

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 125, 157, 250, 265, 314, 530, 785, 1325, 1570, 2650, 3925, 6625, 7850, 8321, 10091, 13250, 16642, 19625, 20182, 39250, 41605, 50455, 83210, 100910, 208025, 252275, 416050, 504550, 534823, 1040125, 1069646, 1261375, 1584287, 2080250, 2522750, 2674115, 3168574, 5348230, 7921435, 13370575, 15842870, 26741150, 39607175, 66852875, 79214350, 83967211, 133705750, 167934422, 198035875, 396071750, 419836055, 839672110, 2099180275, 4198360550, 10495901375, 20991802750]

約数ペア:

[(1, 20991802750), (2, 10495901375), (5, 4198360550), (10, 2099180275), (25, 839672110), (50, 419836055), (53, 396071750), (106, 198035875), (125, 167934422), (157, 133705750), (250, 83967211), (265, 79214350), (314, 66852875), (530, 39607175), (785, 26741150), (1325, 15842870), (1570, 13370575), (2650, 7921435), (3925, 5348230), (6625, 3168574), (7850, 2674115), (8321, 2522750), (10091, 2080250), (13250, 1584287), (16642, 1261375), (19625, 1069646), (20182, 1040125), (39250, 534823), (41605, 504550), (50455, 416050), (83210, 252275), (100910, 208025)]