20260554880

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{400723}}^1$

素因数の和:400821

約数の個数: 64

約数和(自身を含む): 49048617600

約数和(自身を除く): 28788062720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 2528, 3160, 5056, 6320, 10112, 12640, 25280, 50560, 400723, 801446, 1602892, 2003615, 3205784, 4007230, 6411568, 8014460, 12823136, 16028920, 25646272, 31657117, 32057840, 51292544, 63314234, 64115680, 126628468, 128231360, 158285585, 253256936, 256462720, 316571170, 506513872, 633142340, 1013027744, 1266284680, 2026055488, 2532569360, 4052110976, 5065138720, 10130277440, 20260554880]

約数ペア:

[(1, 20260554880), (2, 10130277440), (4, 5065138720), (5, 4052110976), (8, 2532569360), (10, 2026055488), (16, 1266284680), (20, 1013027744), (32, 633142340), (40, 506513872), (64, 316571170), (79, 256462720), (80, 253256936), (128, 158285585), (158, 128231360), (160, 126628468), (316, 64115680), (320, 63314234), (395, 51292544), (632, 32057840), (640, 31657117), (790, 25646272), (1264, 16028920), (1580, 12823136), (2528, 8014460), (3160, 6411568), (5056, 4007230), (6320, 3205784), (10112, 2003615), (12640, 1602892), (25280, 801446), (50560, 400723)]