1285294900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:506

約数の個数: 144

約数和(自身を含む): 3087302400

約数和(自身を除く): 1802007500

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 37, 38, 47, 50, 74, 76, 94, 95, 100, 148, 185, 188, 190, 235, 370, 380, 389, 470, 475, 703, 740, 778, 893, 925, 940, 950, 1175, 1406, 1556, 1739, 1786, 1850, 1900, 1945, 2350, 2812, 3478, 3515, 3572, 3700, 3890, 4465, 4700, 6956, 7030, 7391, 7780, 8695, 8930, 9725, 14060, 14393, 14782, 17390, 17575, 17860, 18283, 19450, 22325, 28786, 29564, 33041, 34780, 35150, 36566, 36955, 38900, 43475, 44650, 57572, 66082, 70300, 71965, 73132, 73910, 86950, 89300, 91415, 132164, 143930, 147820, 165205, 173900, 182830, 184775, 273467, 287860, 330410, 347377, 359825, 365660, 369550, 457075, 546934, 660820, 676471, 694754, 719650, 739100, 826025, 914150, 1093868, 1352942, 1367335, 1389508, 1439300, 1652050, 1736885, 1828300, 2705884, 2734670, 3304100, 3382355, 3473770, 5469340, 6764710, 6836675, 6947540, 8684425, 12852949, 13529420, 13673350, 16911775, 17368850, 25705898, 27346700, 33823550, 34737700, 51411796, 64264745, 67647100, 128529490, 257058980, 321323725, 642647450, 1285294900]

約数ペア:

[(1, 1285294900), (2, 642647450), (4, 321323725), (5, 257058980), (10, 128529490), (19, 67647100), (20, 64264745), (25, 51411796), (37, 34737700), (38, 33823550), (47, 27346700), (50, 25705898), (74, 17368850), (76, 16911775), (94, 13673350), (95, 13529420), (100, 12852949), (148, 8684425), (185, 6947540), (188, 6836675), (190, 6764710), (235, 5469340), (370, 3473770), (380, 3382355), (389, 3304100), (470, 2734670), (475, 2705884), (703, 1828300), (740, 1736885), (778, 1652050), (893, 1439300), (925, 1389508), (940, 1367335), (950, 1352942), (1175, 1093868), (1406, 914150), (1556, 826025), (1739, 739100), (1786, 719650), (1850, 694754), (1900, 676471), (1945, 660820), (2350, 546934), (2812, 457075), (3478, 369550), (3515, 365660), (3572, 359825), (3700, 347377), (3890, 330410), (4465, 287860), (4700, 273467), (6956, 184775), (7030, 182830), (7391, 173900), (7780, 165205), (8695, 147820), (8930, 143930), (9725, 132164), (14060, 91415), (14393, 89300), (14782, 86950), (17390, 73910), (17575, 73132), (17860, 71965), (18283, 70300), (19450, 66082), (22325, 57572), (28786, 44650), (29564, 43475), (33041, 38900), (34780, 36955), (35150, 36566)]