19898580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:385

約数の個数: 96

約数和(自身を含む): 60850944

約数和(自身を除く): 40952364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 97, 130, 156, 194, 195, 260, 263, 291, 388, 390, 485, 526, 582, 780, 789, 970, 1052, 1164, 1261, 1315, 1455, 1578, 1940, 2522, 2630, 2910, 3156, 3419, 3783, 3945, 5044, 5260, 5820, 6305, 6838, 7566, 7890, 10257, 12610, 13676, 15132, 15780, 17095, 18915, 20514, 25220, 25511, 34190, 37830, 41028, 51022, 51285, 68380, 75660, 76533, 102044, 102570, 127555, 153066, 205140, 255110, 306132, 331643, 382665, 510220, 663286, 765330, 994929, 1326572, 1530660, 1658215, 1989858, 3316430, 3979716, 4974645, 6632860, 9949290, 19898580]

約数ペア:

[(1, 19898580), (2, 9949290), (3, 6632860), (4, 4974645), (5, 3979716), (6, 3316430), (10, 1989858), (12, 1658215), (13, 1530660), (15, 1326572), (20, 994929), (26, 765330), (30, 663286), (39, 510220), (52, 382665), (60, 331643), (65, 306132), (78, 255110), (97, 205140), (130, 153066), (156, 127555), (194, 102570), (195, 102044), (260, 76533), (263, 75660), (291, 68380), (388, 51285), (390, 51022), (485, 41028), (526, 37830), (582, 34190), (780, 25511), (789, 25220), (970, 20514), (1052, 18915), (1164, 17095), (1261, 15780), (1315, 15132), (1455, 13676), (1578, 12610), (1940, 10257), (2522, 7890), (2630, 7566), (2910, 6838), (3156, 6305), (3419, 5820), (3783, 5260), (3945, 5044)]