21563937280

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{271723}}^1$

素因数の和:271777

約数の個数: 80

約数和(自身を含む): 53370941184

約数和(自身を除く): 31807003904

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, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 271723, 543446, 1086892, 1358615, 2173784, 2717230, 4347568, 5434460, 8423413, 8695136, 10868920, 16846826, 17390272, 21737840, 33693652, 34780544, 42117065, 43475680, 67387304, 69561088, 84234130, 86951360, 134774608, 139122176, 168468260, 173902720, 269549216, 336936520, 347805440, 539098432, 673873040, 695610880, 1078196864, 1347746080, 2156393728, 2695492160, 4312787456, 5390984320, 10781968640, 21563937280]

約数ペア:

[(1, 21563937280), (2, 10781968640), (4, 5390984320), (5, 4312787456), (8, 2695492160), (10, 2156393728), (16, 1347746080), (20, 1078196864), (31, 695610880), (32, 673873040), (40, 539098432), (62, 347805440), (64, 336936520), (80, 269549216), (124, 173902720), (128, 168468260), (155, 139122176), (160, 134774608), (248, 86951360), (256, 84234130), (310, 69561088), (320, 67387304), (496, 43475680), (512, 42117065), (620, 34780544), (640, 33693652), (992, 21737840), (1240, 17390272), (1280, 16846826), (1984, 10868920), (2480, 8695136), (2560, 8423413), (3968, 5434460), (4960, 4347568), (7936, 2717230), (9920, 2173784), (15872, 1358615), (19840, 1086892), (39680, 543446), (79360, 271723)]