30190280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 71124480

約数和(自身を除く): 40934200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 155, 194, 248, 251, 310, 388, 485, 502, 620, 776, 970, 1004, 1240, 1255, 1940, 2008, 2510, 3007, 3880, 5020, 6014, 7781, 10040, 12028, 15035, 15562, 24056, 24347, 30070, 31124, 38905, 48694, 60140, 62248, 77810, 97388, 120280, 121735, 155620, 194776, 243470, 311240, 486940, 754757, 973880, 1509514, 3019028, 3773785, 6038056, 7547570, 15095140, 30190280]

約数ペア:

[(1, 30190280), (2, 15095140), (4, 7547570), (5, 6038056), (8, 3773785), (10, 3019028), (20, 1509514), (31, 973880), (40, 754757), (62, 486940), (97, 311240), (124, 243470), (155, 194776), (194, 155620), (248, 121735), (251, 120280), (310, 97388), (388, 77810), (485, 62248), (502, 60140), (620, 48694), (776, 38905), (970, 31124), (1004, 30070), (1240, 24347), (1255, 24056), (1940, 15562), (2008, 15035), (2510, 12028), (3007, 10040), (3880, 7781), (5020, 6014)]