20736435520

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1580521}}^1$

素因数の和:1580579

約数の個数: 56

約数和(自身を含む): 50583026088

約数和(自身を除く): 29846590568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1640, 2624, 3280, 6560, 13120, 1580521, 3161042, 6322084, 7902605, 12644168, 15805210, 25288336, 31610420, 50576672, 63220840, 64801361, 101153344, 126441680, 129602722, 252883360, 259205444, 324006805, 505766720, 518410888, 648013610, 1036821776, 1296027220, 2073643552, 2592054440, 4147287104, 5184108880, 10368217760, 20736435520]

約数ペア:

[(1, 20736435520), (2, 10368217760), (4, 5184108880), (5, 4147287104), (8, 2592054440), (10, 2073643552), (16, 1296027220), (20, 1036821776), (32, 648013610), (40, 518410888), (41, 505766720), (64, 324006805), (80, 259205444), (82, 252883360), (160, 129602722), (164, 126441680), (205, 101153344), (320, 64801361), (328, 63220840), (410, 50576672), (656, 31610420), (820, 25288336), (1312, 15805210), (1640, 12644168), (2624, 7902605), (3280, 6322084), (6560, 3161042), (13120, 1580521)]