21682720

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4673}}^1$

素因数の和:4717

約数の個数: 48

約数和(自身を含む): 53003160

約数和(自身を除く): 31320440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4640, 4673, 9346, 18692, 23365, 37384, 46730, 74768, 93460, 135517, 149536, 186920, 271034, 373840, 542068, 677585, 747680, 1084136, 1355170, 2168272, 2710340, 4336544, 5420680, 10841360, 21682720]

約数ペア:

[(1, 21682720), (2, 10841360), (4, 5420680), (5, 4336544), (8, 2710340), (10, 2168272), (16, 1355170), (20, 1084136), (29, 747680), (32, 677585), (40, 542068), (58, 373840), (80, 271034), (116, 186920), (145, 149536), (160, 135517), (232, 93460), (290, 74768), (464, 46730), (580, 37384), (928, 23365), (1160, 18692), (2320, 9346), (4640, 4673)]