20171955100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{97}}^2\times {\mathrm{1949}}^1$

素因数の和:2168

約数の個数: 108

約数和(自身を含む): 48274644600

約数和(自身を除く): 28102689500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 97, 100, 110, 194, 220, 275, 388, 485, 550, 970, 1067, 1100, 1940, 1949, 2134, 2425, 3898, 4268, 4850, 5335, 7796, 9409, 9700, 9745, 10670, 18818, 19490, 21340, 21439, 26675, 37636, 38980, 42878, 47045, 48725, 53350, 85756, 94090, 97450, 103499, 106700, 107195, 188180, 189053, 194900, 206998, 214390, 235225, 378106, 413996, 428780, 470450, 517495, 535975, 756212, 940900, 945265, 1034990, 1071950, 1890530, 2069980, 2079583, 2143900, 2587475, 3781060, 4159166, 4726325, 5174950, 8318332, 9452650, 10349900, 10397915, 18338141, 18905300, 20795830, 36676282, 41591660, 51989575, 73352564, 91690705, 103979150, 183381410, 201719551, 207958300, 366762820, 403439102, 458453525, 806878204, 916907050, 1008597755, 1833814100, 2017195510, 4034391020, 5042988775, 10085977550, 20171955100]

約数ペア:

[(1, 20171955100), (2, 10085977550), (4, 5042988775), (5, 4034391020), (10, 2017195510), (11, 1833814100), (20, 1008597755), (22, 916907050), (25, 806878204), (44, 458453525), (50, 403439102), (55, 366762820), (97, 207958300), (100, 201719551), (110, 183381410), (194, 103979150), (220, 91690705), (275, 73352564), (388, 51989575), (485, 41591660), (550, 36676282), (970, 20795830), (1067, 18905300), (1100, 18338141), (1940, 10397915), (1949, 10349900), (2134, 9452650), (2425, 8318332), (3898, 5174950), (4268, 4726325), (4850, 4159166), (5335, 3781060), (7796, 2587475), (9409, 2143900), (9700, 2079583), (9745, 2069980), (10670, 1890530), (18818, 1071950), (19490, 1034990), (21340, 945265), (21439, 940900), (26675, 756212), (37636, 535975), (38980, 517495), (42878, 470450), (47045, 428780), (48725, 413996), (53350, 378106), (85756, 235225), (94090, 214390), (97450, 206998), (103499, 194900), (106700, 189053), (107195, 188180)]