20039680

素因数分解:

$2^{11}\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 51105600

約数和(自身を除く): 31065920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 103, 128, 152, 160, 190, 206, 256, 304, 320, 380, 412, 512, 515, 608, 640, 760, 824, 1024, 1030, 1216, 1280, 1520, 1648, 1957, 2048, 2060, 2432, 2560, 3040, 3296, 3914, 4120, 4864, 5120, 6080, 6592, 7828, 8240, 9728, 9785, 10240, 12160, 13184, 15656, 16480, 19456, 19570, 24320, 26368, 31312, 32960, 38912, 39140, 48640, 52736, 62624, 65920, 78280, 97280, 105472, 125248, 131840, 156560, 194560, 210944, 250496, 263680, 313120, 500992, 527360, 626240, 1001984, 1054720, 1252480, 2003968, 2504960, 4007936, 5009920, 10019840, 20039680]

約数ペア:

[(1, 20039680), (2, 10019840), (4, 5009920), (5, 4007936), (8, 2504960), (10, 2003968), (16, 1252480), (19, 1054720), (20, 1001984), (32, 626240), (38, 527360), (40, 500992), (64, 313120), (76, 263680), (80, 250496), (95, 210944), (103, 194560), (128, 156560), (152, 131840), (160, 125248), (190, 105472), (206, 97280), (256, 78280), (304, 65920), (320, 62624), (380, 52736), (412, 48640), (512, 39140), (515, 38912), (608, 32960), (640, 31312), (760, 26368), (824, 24320), (1024, 19570), (1030, 19456), (1216, 16480), (1280, 15656), (1520, 13184), (1648, 12160), (1957, 10240), (2048, 9785), (2060, 9728), (2432, 8240), (2560, 7828), (3040, 6592), (3296, 6080), (3914, 5120), (4120, 4864)]