206658400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:705

約数の個数: 144

約数和(自身を含む): 561714048

約数和(自身を除く): 355055648

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 325, 400, 403, 416, 496, 520, 620, 641, 650, 775, 800, 806, 992, 1040, 1240, 1282, 1300, 1550, 1612, 2015, 2080, 2480, 2564, 2600, 3100, 3205, 3224, 4030, 4960, 5128, 5200, 6200, 6410, 6448, 8060, 8333, 10075, 10256, 10400, 12400, 12820, 12896, 16025, 16120, 16666, 19871, 20150, 20512, 24800, 25640, 32050, 32240, 33332, 39742, 40300, 41665, 51280, 64100, 64480, 66664, 79484, 80600, 83330, 99355, 102560, 128200, 133328, 158968, 161200, 166660, 198710, 208325, 256400, 258323, 266656, 317936, 322400, 333320, 397420, 416650, 496775, 512800, 516646, 635872, 666640, 794840, 833300, 993550, 1033292, 1291615, 1333280, 1589680, 1666600, 1987100, 2066584, 2583230, 3179360, 3333200, 3974200, 4133168, 5166460, 6458075, 6666400, 7948400, 8266336, 10332920, 12916150, 15896800, 20665840, 25832300, 41331680, 51664600, 103329200, 206658400]

約数ペア:

[(1, 206658400), (2, 103329200), (4, 51664600), (5, 41331680), (8, 25832300), (10, 20665840), (13, 15896800), (16, 12916150), (20, 10332920), (25, 8266336), (26, 7948400), (31, 6666400), (32, 6458075), (40, 5166460), (50, 4133168), (52, 3974200), (62, 3333200), (65, 3179360), (80, 2583230), (100, 2066584), (104, 1987100), (124, 1666600), (130, 1589680), (155, 1333280), (160, 1291615), (200, 1033292), (208, 993550), (248, 833300), (260, 794840), (310, 666640), (325, 635872), (400, 516646), (403, 512800), (416, 496775), (496, 416650), (520, 397420), (620, 333320), (641, 322400), (650, 317936), (775, 266656), (800, 258323), (806, 256400), (992, 208325), (1040, 198710), (1240, 166660), (1282, 161200), (1300, 158968), (1550, 133328), (1612, 128200), (2015, 102560), (2080, 99355), (2480, 83330), (2564, 80600), (2600, 79484), (3100, 66664), (3205, 64480), (3224, 64100), (4030, 51280), (4960, 41665), (5128, 40300), (5200, 39742), (6200, 33332), (6410, 32240), (6448, 32050), (8060, 25640), (8333, 24800), (10075, 20512), (10256, 20150), (10400, 19871), (12400, 16666), (12820, 16120), (12896, 16025)]