991347760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:471

約数の個数: 160

約数和(自身を含む): 2596833792

約数和(自身を除く): 1605486032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 97, 104, 124, 130, 155, 194, 208, 248, 260, 310, 317, 388, 403, 485, 496, 520, 620, 634, 776, 806, 970, 1040, 1240, 1261, 1268, 1552, 1585, 1612, 1940, 2015, 2480, 2522, 2536, 3007, 3170, 3224, 3880, 4030, 4121, 5044, 5072, 6014, 6305, 6340, 6448, 7760, 8060, 8242, 9827, 10088, 12028, 12610, 12680, 15035, 16120, 16484, 19654, 20176, 20605, 24056, 25220, 25360, 30070, 30749, 32240, 32968, 39091, 39308, 41210, 48112, 49135, 50440, 60140, 61498, 65936, 78182, 78616, 82420, 98270, 100880, 120280, 122996, 127751, 153745, 156364, 157232, 164840, 195455, 196540, 240560, 245992, 255502, 307490, 312728, 329680, 390910, 393080, 399737, 491984, 511004, 614980, 625456, 638755, 781820, 786160, 799474, 953219, 1022008, 1229960, 1277510, 1563640, 1598948, 1906438, 1998685, 2044016, 2459920, 2555020, 3127280, 3197896, 3812876, 3997370, 4766095, 5110040, 6395792, 7625752, 7994740, 9532190, 10220080, 12391847, 15251504, 15989480, 19064380, 24783694, 31978960, 38128760, 49567388, 61959235, 76257520, 99134776, 123918470, 198269552, 247836940, 495673880, 991347760]

約数ペア:

[(1, 991347760), (2, 495673880), (4, 247836940), (5, 198269552), (8, 123918470), (10, 99134776), (13, 76257520), (16, 61959235), (20, 49567388), (26, 38128760), (31, 31978960), (40, 24783694), (52, 19064380), (62, 15989480), (65, 15251504), (80, 12391847), (97, 10220080), (104, 9532190), (124, 7994740), (130, 7625752), (155, 6395792), (194, 5110040), (208, 4766095), (248, 3997370), (260, 3812876), (310, 3197896), (317, 3127280), (388, 2555020), (403, 2459920), (485, 2044016), (496, 1998685), (520, 1906438), (620, 1598948), (634, 1563640), (776, 1277510), (806, 1229960), (970, 1022008), (1040, 953219), (1240, 799474), (1261, 786160), (1268, 781820), (1552, 638755), (1585, 625456), (1612, 614980), (1940, 511004), (2015, 491984), (2480, 399737), (2522, 393080), (2536, 390910), (3007, 329680), (3170, 312728), (3224, 307490), (3880, 255502), (4030, 245992), (4121, 240560), (5044, 196540), (5072, 195455), (6014, 164840), (6305, 157232), (6340, 156364), (6448, 153745), (7760, 127751), (8060, 122996), (8242, 120280), (9827, 100880), (10088, 98270), (12028, 82420), (12610, 78616), (12680, 78182), (15035, 65936), (16120, 61498), (16484, 60140), (19654, 50440), (20176, 49135), (20605, 48112), (24056, 41210), (25220, 39308), (25360, 39091), (30070, 32968), (30749, 32240)]