30991520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 87907680

約数和(自身を除く): 56916160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 59, 67, 70, 80, 98, 112, 118, 134, 140, 160, 196, 224, 236, 245, 268, 280, 295, 335, 392, 413, 469, 472, 490, 536, 560, 590, 670, 784, 826, 938, 944, 980, 1072, 1120, 1180, 1340, 1568, 1652, 1876, 1888, 1960, 2065, 2144, 2345, 2360, 2680, 2891, 3283, 3304, 3752, 3920, 3953, 4130, 4690, 4720, 5360, 5782, 6566, 6608, 7504, 7840, 7906, 8260, 9380, 9440, 10720, 11564, 13132, 13216, 14455, 15008, 15812, 16415, 16520, 18760, 19765, 23128, 26264, 27671, 28910, 31624, 32830, 33040, 37520, 39530, 46256, 52528, 55342, 57820, 63248, 65660, 66080, 75040, 79060, 92512, 105056, 110684, 115640, 126496, 131320, 138355, 158120, 193697, 221368, 231280, 262640, 276710, 316240, 387394, 442736, 462560, 525280, 553420, 632480, 774788, 885472, 968485, 1106840, 1549576, 1936970, 2213680, 3099152, 3873940, 4427360, 6198304, 7747880, 15495760, 30991520]

約数ペア:

[(1, 30991520), (2, 15495760), (4, 7747880), (5, 6198304), (7, 4427360), (8, 3873940), (10, 3099152), (14, 2213680), (16, 1936970), (20, 1549576), (28, 1106840), (32, 968485), (35, 885472), (40, 774788), (49, 632480), (56, 553420), (59, 525280), (67, 462560), (70, 442736), (80, 387394), (98, 316240), (112, 276710), (118, 262640), (134, 231280), (140, 221368), (160, 193697), (196, 158120), (224, 138355), (236, 131320), (245, 126496), (268, 115640), (280, 110684), (295, 105056), (335, 92512), (392, 79060), (413, 75040), (469, 66080), (472, 65660), (490, 63248), (536, 57820), (560, 55342), (590, 52528), (670, 46256), (784, 39530), (826, 37520), (938, 33040), (944, 32830), (980, 31624), (1072, 28910), (1120, 27671), (1180, 26264), (1340, 23128), (1568, 19765), (1652, 18760), (1876, 16520), (1888, 16415), (1960, 15812), (2065, 15008), (2144, 14455), (2345, 13216), (2360, 13132), (2680, 11564), (2891, 10720), (3283, 9440), (3304, 9380), (3752, 8260), (3920, 7906), (3953, 7840), (4130, 7504), (4690, 6608), (4720, 6566), (5360, 5782)]