256571820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1471}}^1$

素因数の和:1525

約数の個数: 192

約数和(自身を含む): 890265600

約数和(自身を除く): 633693780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 27, 30, 34, 36, 38, 45, 51, 54, 57, 60, 68, 76, 85, 90, 95, 102, 108, 114, 135, 153, 170, 171, 180, 190, 204, 228, 255, 270, 285, 306, 323, 340, 342, 380, 459, 510, 513, 540, 570, 612, 646, 684, 765, 855, 918, 969, 1020, 1026, 1140, 1292, 1471, 1530, 1615, 1710, 1836, 1938, 2052, 2295, 2565, 2907, 2942, 3060, 3230, 3420, 3876, 4413, 4590, 4845, 5130, 5814, 5884, 6460, 7355, 8721, 8826, 9180, 9690, 10260, 11628, 13239, 14535, 14710, 17442, 17652, 19380, 22065, 25007, 26478, 27949, 29070, 29420, 34884, 39717, 43605, 44130, 50014, 52956, 55898, 58140, 66195, 75021, 79434, 83847, 87210, 88260, 100028, 111796, 125035, 132390, 139745, 150042, 158868, 167694, 174420, 198585, 225063, 250070, 251541, 264780, 279490, 300084, 335388, 375105, 397170, 419235, 450126, 475133, 500140, 503082, 558980, 675189, 750210, 754623, 794340, 838470, 900252, 950266, 1006164, 1125315, 1257705, 1350378, 1425399, 1500420, 1509246, 1676940, 1900532, 2250630, 2375665, 2515410, 2700756, 2850798, 3018492, 3375945, 3773115, 4276197, 4501260, 4751330, 5030820, 5701596, 6751890, 7126995, 7546230, 8552394, 9502660, 12828591, 13503780, 14253990, 15092460, 17104788, 21380985, 25657182, 28507980, 42761970, 51314364, 64142955, 85523940, 128285910, 256571820]

約数ペア:

[(1, 256571820), (2, 128285910), (3, 85523940), (4, 64142955), (5, 51314364), (6, 42761970), (9, 28507980), (10, 25657182), (12, 21380985), (15, 17104788), (17, 15092460), (18, 14253990), (19, 13503780), (20, 12828591), (27, 9502660), (30, 8552394), (34, 7546230), (36, 7126995), (38, 6751890), (45, 5701596), (51, 5030820), (54, 4751330), (57, 4501260), (60, 4276197), (68, 3773115), (76, 3375945), (85, 3018492), (90, 2850798), (95, 2700756), (102, 2515410), (108, 2375665), (114, 2250630), (135, 1900532), (153, 1676940), (170, 1509246), (171, 1500420), (180, 1425399), (190, 1350378), (204, 1257705), (228, 1125315), (255, 1006164), (270, 950266), (285, 900252), (306, 838470), (323, 794340), (340, 754623), (342, 750210), (380, 675189), (459, 558980), (510, 503082), (513, 500140), (540, 475133), (570, 450126), (612, 419235), (646, 397170), (684, 375105), (765, 335388), (855, 300084), (918, 279490), (969, 264780), (1020, 251541), (1026, 250070), (1140, 225063), (1292, 198585), (1471, 174420), (1530, 167694), (1615, 158868), (1710, 150042), (1836, 139745), (1938, 132390), (2052, 125035), (2295, 111796), (2565, 100028), (2907, 88260), (2942, 87210), (3060, 83847), (3230, 79434), (3420, 75021), (3876, 66195), (4413, 58140), (4590, 55898), (4845, 52956), (5130, 50014), (5814, 44130), (5884, 43605), (6460, 39717), (7355, 34884), (8721, 29420), (8826, 29070), (9180, 27949), (9690, 26478), (10260, 25007), (11628, 22065), (13239, 19380), (14535, 17652), (14710, 17442)]