21000906368

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1\times {\mathrm{983}}^1$

素因数の和:1394

約数の個数: 128

約数和(自身を含む): 46454325120

約数和(自身を除く): 25453418752

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 128, 148, 208, 296, 347, 416, 481, 592, 694, 832, 962, 983, 1184, 1388, 1664, 1924, 1966, 2368, 2776, 3848, 3932, 4511, 4736, 5552, 7696, 7864, 9022, 11104, 12779, 12839, 15392, 15728, 18044, 22208, 25558, 25678, 30784, 31456, 36088, 36371, 44416, 51116, 51356, 61568, 62912, 72176, 72742, 102232, 102712, 125824, 144352, 145484, 166907, 204464, 205424, 288704, 290968, 333814, 341101, 408928, 410848, 472823, 577408, 581936, 667628, 682202, 817856, 821696, 945646, 1163872, 1335256, 1364404, 1635712, 1643392, 1891292, 2327744, 2670512, 2728808, 3782584, 4434313, 4655488, 5341024, 5457616, 7565168, 8868626, 10682048, 10915232, 12620737, 15130336, 17737252, 21364096, 21830464, 25241474, 30260672, 35474504, 43660928, 50482948, 60521344, 70949008, 100965896, 141898016, 164069581, 201931792, 283796032, 328139162, 403863584, 567592064, 656278324, 807727168, 1312556648, 1615454336, 2625113296, 5250226592, 10500453184, 21000906368]

約数ペア:

[(1, 21000906368), (2, 10500453184), (4, 5250226592), (8, 2625113296), (13, 1615454336), (16, 1312556648), (26, 807727168), (32, 656278324), (37, 567592064), (52, 403863584), (64, 328139162), (74, 283796032), (104, 201931792), (128, 164069581), (148, 141898016), (208, 100965896), (296, 70949008), (347, 60521344), (416, 50482948), (481, 43660928), (592, 35474504), (694, 30260672), (832, 25241474), (962, 21830464), (983, 21364096), (1184, 17737252), (1388, 15130336), (1664, 12620737), (1924, 10915232), (1966, 10682048), (2368, 8868626), (2776, 7565168), (3848, 5457616), (3932, 5341024), (4511, 4655488), (4736, 4434313), (5552, 3782584), (7696, 2728808), (7864, 2670512), (9022, 2327744), (11104, 1891292), (12779, 1643392), (12839, 1635712), (15392, 1364404), (15728, 1335256), (18044, 1163872), (22208, 945646), (25558, 821696), (25678, 817856), (30784, 682202), (31456, 667628), (36088, 581936), (36371, 577408), (44416, 472823), (51116, 410848), (51356, 408928), (61568, 341101), (62912, 333814), (72176, 290968), (72742, 288704), (102232, 205424), (102712, 204464), (125824, 166907), (144352, 145484)]