21551160320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{135781}}^1$

素因数の和:135837

約数の個数: 88

約数和(自身を含む): 53365584768

約数和(自身を除く): 31814424448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 5120, 7936, 9920, 15872, 19840, 31744, 39680, 79360, 135781, 158720, 271562, 543124, 678905, 1086248, 1357810, 2172496, 2715620, 4209211, 4344992, 5431240, 8418422, 8689984, 10862480, 16836844, 17379968, 21046055, 21724960, 33673688, 34759936, 42092110, 43449920, 67347376, 69519872, 84184220, 86899840, 134694752, 139039744, 168368440, 173799680, 269389504, 336736880, 347599360, 538779008, 673473760, 695198720, 1077558016, 1346947520, 2155116032, 2693895040, 4310232064, 5387790080, 10775580160, 21551160320]

約数ペア:

[(1, 21551160320), (2, 10775580160), (4, 5387790080), (5, 4310232064), (8, 2693895040), (10, 2155116032), (16, 1346947520), (20, 1077558016), (31, 695198720), (32, 673473760), (40, 538779008), (62, 347599360), (64, 336736880), (80, 269389504), (124, 173799680), (128, 168368440), (155, 139039744), (160, 134694752), (248, 86899840), (256, 84184220), (310, 69519872), (320, 67347376), (496, 43449920), (512, 42092110), (620, 34759936), (640, 33673688), (992, 21724960), (1024, 21046055), (1240, 17379968), (1280, 16836844), (1984, 10862480), (2480, 8689984), (2560, 8418422), (3968, 5431240), (4960, 4344992), (5120, 4209211), (7936, 2715620), (9920, 2172496), (15872, 1357810), (19840, 1086248), (31744, 678905), (39680, 543124), (79360, 271562), (135781, 158720)]