21785296

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 49403088

約数和(自身を除く): 27617792

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 61, 68, 101, 104, 122, 136, 202, 208, 221, 244, 272, 404, 442, 488, 793, 808, 884, 976, 1037, 1313, 1586, 1616, 1717, 1768, 2074, 2626, 3172, 3434, 3536, 4148, 5252, 6161, 6344, 6868, 8296, 10504, 12322, 12688, 13481, 13736, 16592, 21008, 22321, 24644, 26962, 27472, 44642, 49288, 53924, 80093, 89284, 98576, 104737, 107848, 160186, 178568, 209474, 215696, 320372, 357136, 418948, 640744, 837896, 1281488, 1361581, 1675792, 2723162, 5446324, 10892648, 21785296]

約数ペア:

[(1, 21785296), (2, 10892648), (4, 5446324), (8, 2723162), (13, 1675792), (16, 1361581), (17, 1281488), (26, 837896), (34, 640744), (52, 418948), (61, 357136), (68, 320372), (101, 215696), (104, 209474), (122, 178568), (136, 160186), (202, 107848), (208, 104737), (221, 98576), (244, 89284), (272, 80093), (404, 53924), (442, 49288), (488, 44642), (793, 27472), (808, 26962), (884, 24644), (976, 22321), (1037, 21008), (1313, 16592), (1586, 13736), (1616, 13481), (1717, 12688), (1768, 12322), (2074, 10504), (2626, 8296), (3172, 6868), (3434, 6344), (3536, 6161), (4148, 5252)]