28871820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5531}}^1$

素因数の和:5575

約数の個数: 72

約数和(自身を含む): 90614160

約数和(自身を除く): 61742340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 5531, 11062, 16593, 22124, 27655, 33186, 49779, 55310, 66372, 82965, 99558, 110620, 160399, 165930, 199116, 248895, 320798, 331860, 481197, 497790, 641596, 801995, 962394, 995580, 1443591, 1603990, 1924788, 2405985, 2887182, 3207980, 4811970, 5774364, 7217955, 9623940, 14435910, 28871820]

約数ペア:

[(1, 28871820), (2, 14435910), (3, 9623940), (4, 7217955), (5, 5774364), (6, 4811970), (9, 3207980), (10, 2887182), (12, 2405985), (15, 1924788), (18, 1603990), (20, 1443591), (29, 995580), (30, 962394), (36, 801995), (45, 641596), (58, 497790), (60, 481197), (87, 331860), (90, 320798), (116, 248895), (145, 199116), (174, 165930), (180, 160399), (261, 110620), (290, 99558), (348, 82965), (435, 66372), (522, 55310), (580, 49779), (870, 33186), (1044, 27655), (1305, 22124), (1740, 16593), (2610, 11062), (5220, 5531)]