21167900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{857}}^1$

素因数の和:903

約数の個数: 72

約数和(自身を含む): 52132080

約数和(自身を除く): 30964180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 857, 950, 988, 1235, 1300, 1714, 1900, 2470, 3428, 4285, 4940, 6175, 8570, 11141, 12350, 16283, 17140, 21425, 22282, 24700, 32566, 42850, 44564, 55705, 65132, 81415, 85700, 111410, 162830, 211679, 222820, 278525, 325660, 407075, 423358, 557050, 814150, 846716, 1058395, 1114100, 1628300, 2116790, 4233580, 5291975, 10583950, 21167900]

約数ペア:

[(1, 21167900), (2, 10583950), (4, 5291975), (5, 4233580), (10, 2116790), (13, 1628300), (19, 1114100), (20, 1058395), (25, 846716), (26, 814150), (38, 557050), (50, 423358), (52, 407075), (65, 325660), (76, 278525), (95, 222820), (100, 211679), (130, 162830), (190, 111410), (247, 85700), (260, 81415), (325, 65132), (380, 55705), (475, 44564), (494, 42850), (650, 32566), (857, 24700), (950, 22282), (988, 21425), (1235, 17140), (1300, 16283), (1714, 12350), (1900, 11141), (2470, 8570), (3428, 6175), (4285, 4940)]