19881472

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:163

約数の個数: 80

約数和(自身を含む): 44684640

約数和(自身を除く): 24803168

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 103, 104, 116, 128, 206, 208, 232, 256, 377, 412, 416, 464, 512, 754, 824, 832, 928, 1339, 1508, 1648, 1664, 1856, 2678, 2987, 3016, 3296, 3328, 3712, 5356, 5974, 6032, 6592, 6656, 7424, 10712, 11948, 12064, 13184, 14848, 21424, 23896, 24128, 26368, 38831, 42848, 47792, 48256, 52736, 77662, 85696, 95584, 96512, 155324, 171392, 191168, 193024, 310648, 342784, 382336, 621296, 685568, 764672, 1242592, 1529344, 2485184, 4970368, 9940736, 19881472]

約数ペア:

[(1, 19881472), (2, 9940736), (4, 4970368), (8, 2485184), (13, 1529344), (16, 1242592), (26, 764672), (29, 685568), (32, 621296), (52, 382336), (58, 342784), (64, 310648), (103, 193024), (104, 191168), (116, 171392), (128, 155324), (206, 96512), (208, 95584), (232, 85696), (256, 77662), (377, 52736), (412, 48256), (416, 47792), (464, 42848), (512, 38831), (754, 26368), (824, 24128), (832, 23896), (928, 21424), (1339, 14848), (1508, 13184), (1648, 12064), (1664, 11948), (1856, 10712), (2678, 7424), (2987, 6656), (3016, 6592), (3296, 6032), (3328, 5974), (3712, 5356)]