81324634400

素因数分解:

$2^5\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1006493}}^1$

素因数の和:1006614

約数の個数: 72

約数和(自身を含む): 200499643764

約数和(自身を除く): 119175009364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 101, 160, 200, 202, 400, 404, 505, 800, 808, 1010, 1616, 2020, 2525, 3232, 4040, 5050, 8080, 10100, 16160, 20200, 40400, 80800, 1006493, 2012986, 4025972, 5032465, 8051944, 10064930, 16103888, 20129860, 25162325, 32207776, 40259720, 50324650, 80519440, 100649300, 101655793, 161038880, 201298600, 203311586, 402597200, 406623172, 508278965, 805194400, 813246344, 1016557930, 1626492688, 2033115860, 2541394825, 3252985376, 4066231720, 5082789650, 8132463440, 10165579300, 16264926880, 20331158600, 40662317200, 81324634400]

約数ペア:

[(1, 81324634400), (2, 40662317200), (4, 20331158600), (5, 16264926880), (8, 10165579300), (10, 8132463440), (16, 5082789650), (20, 4066231720), (25, 3252985376), (32, 2541394825), (40, 2033115860), (50, 1626492688), (80, 1016557930), (100, 813246344), (101, 805194400), (160, 508278965), (200, 406623172), (202, 402597200), (400, 203311586), (404, 201298600), (505, 161038880), (800, 101655793), (808, 100649300), (1010, 80519440), (1616, 50324650), (2020, 40259720), (2525, 32207776), (3232, 25162325), (4040, 20129860), (5050, 16103888), (8080, 10064930), (10100, 8051944), (16160, 5032465), (20200, 4025972), (40400, 2012986), (80800, 1006493)]