28807520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 144

約数和(自身を含む): 83553120

約数和(自身を除く): 54745600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 68, 70, 80, 85, 89, 112, 119, 136, 140, 160, 170, 178, 224, 238, 272, 280, 289, 340, 356, 445, 476, 544, 560, 578, 595, 623, 680, 712, 890, 952, 1120, 1156, 1190, 1246, 1360, 1424, 1445, 1513, 1780, 1904, 2023, 2312, 2380, 2492, 2720, 2848, 2890, 3026, 3115, 3560, 3808, 4046, 4624, 4760, 4984, 5780, 6052, 6230, 7120, 7565, 8092, 9248, 9520, 9968, 10115, 10591, 11560, 12104, 12460, 14240, 15130, 16184, 19040, 19936, 20230, 21182, 23120, 24208, 24920, 25721, 30260, 32368, 40460, 42364, 46240, 48416, 49840, 51442, 52955, 60520, 64736, 80920, 84728, 99680, 102884, 105910, 121040, 128605, 161840, 169456, 180047, 205768, 211820, 242080, 257210, 323680, 338912, 360094, 411536, 423640, 514420, 720188, 823072, 847280, 900235, 1028840, 1440376, 1694560, 1800470, 2057680, 2880752, 3600940, 4115360, 5761504, 7201880, 14403760, 28807520]

約数ペア:

[(1, 28807520), (2, 14403760), (4, 7201880), (5, 5761504), (7, 4115360), (8, 3600940), (10, 2880752), (14, 2057680), (16, 1800470), (17, 1694560), (20, 1440376), (28, 1028840), (32, 900235), (34, 847280), (35, 823072), (40, 720188), (56, 514420), (68, 423640), (70, 411536), (80, 360094), (85, 338912), (89, 323680), (112, 257210), (119, 242080), (136, 211820), (140, 205768), (160, 180047), (170, 169456), (178, 161840), (224, 128605), (238, 121040), (272, 105910), (280, 102884), (289, 99680), (340, 84728), (356, 80920), (445, 64736), (476, 60520), (544, 52955), (560, 51442), (578, 49840), (595, 48416), (623, 46240), (680, 42364), (712, 40460), (890, 32368), (952, 30260), (1120, 25721), (1156, 24920), (1190, 24208), (1246, 23120), (1360, 21182), (1424, 20230), (1445, 19936), (1513, 19040), (1780, 16184), (1904, 15130), (2023, 14240), (2312, 12460), (2380, 12104), (2492, 11560), (2720, 10591), (2848, 10115), (2890, 9968), (3026, 9520), (3115, 9248), (3560, 8092), (3808, 7565), (4046, 7120), (4624, 6230), (4760, 6052), (4984, 5780)]