17981860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 96

約数和(自身を含む): 44255232

約数和(自身を除く): 26273372

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 31, 46, 52, 62, 65, 92, 97, 115, 124, 130, 155, 194, 230, 260, 299, 310, 388, 403, 460, 485, 598, 620, 713, 806, 970, 1196, 1261, 1426, 1495, 1612, 1940, 2015, 2231, 2522, 2852, 2990, 3007, 3565, 4030, 4462, 5044, 5980, 6014, 6305, 7130, 8060, 8924, 9269, 11155, 12028, 12610, 14260, 15035, 18538, 22310, 25220, 29003, 30070, 37076, 39091, 44620, 46345, 58006, 60140, 69161, 78182, 92690, 116012, 138322, 145015, 156364, 185380, 195455, 276644, 290030, 345805, 390910, 580060, 691610, 781820, 899093, 1383220, 1798186, 3596372, 4495465, 8990930, 17981860]

約数ペア:

[(1, 17981860), (2, 8990930), (4, 4495465), (5, 3596372), (10, 1798186), (13, 1383220), (20, 899093), (23, 781820), (26, 691610), (31, 580060), (46, 390910), (52, 345805), (62, 290030), (65, 276644), (92, 195455), (97, 185380), (115, 156364), (124, 145015), (130, 138322), (155, 116012), (194, 92690), (230, 78182), (260, 69161), (299, 60140), (310, 58006), (388, 46345), (403, 44620), (460, 39091), (485, 37076), (598, 30070), (620, 29003), (713, 25220), (806, 22310), (970, 18538), (1196, 15035), (1261, 14260), (1426, 12610), (1495, 12028), (1612, 11155), (1940, 9269), (2015, 8924), (2231, 8060), (2522, 7130), (2852, 6305), (2990, 6014), (3007, 5980), (3565, 5044), (4030, 4462)]