19725920

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:184

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 30061216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 80, 82, 97, 124, 155, 160, 164, 194, 205, 248, 310, 328, 388, 410, 485, 496, 620, 656, 776, 820, 970, 992, 1240, 1271, 1312, 1552, 1640, 1940, 2480, 2542, 3007, 3104, 3280, 3880, 3977, 4960, 5084, 6014, 6355, 6560, 7760, 7954, 10168, 12028, 12710, 15035, 15520, 15908, 19885, 20336, 24056, 25420, 30070, 31816, 39770, 40672, 48112, 50840, 60140, 63632, 79540, 96224, 101680, 120280, 123287, 127264, 159080, 203360, 240560, 246574, 318160, 481120, 493148, 616435, 636320, 986296, 1232870, 1972592, 2465740, 3945184, 4931480, 9862960, 19725920]

約数ペア:

[(1, 19725920), (2, 9862960), (4, 4931480), (5, 3945184), (8, 2465740), (10, 1972592), (16, 1232870), (20, 986296), (31, 636320), (32, 616435), (40, 493148), (41, 481120), (62, 318160), (80, 246574), (82, 240560), (97, 203360), (124, 159080), (155, 127264), (160, 123287), (164, 120280), (194, 101680), (205, 96224), (248, 79540), (310, 63632), (328, 60140), (388, 50840), (410, 48112), (485, 40672), (496, 39770), (620, 31816), (656, 30070), (776, 25420), (820, 24056), (970, 20336), (992, 19885), (1240, 15908), (1271, 15520), (1312, 15035), (1552, 12710), (1640, 12028), (1940, 10168), (2480, 7954), (2542, 7760), (3007, 6560), (3104, 6355), (3280, 6014), (3880, 5084), (3977, 4960)]