16420563940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{157799}}^1$

素因数の和:157873

約数の個数: 72

約数和(自身を含む): 38784715200

約数和(自身を除く): 22364151260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 121, 172, 215, 220, 242, 430, 473, 484, 605, 860, 946, 1210, 1892, 2365, 2420, 4730, 5203, 9460, 10406, 20812, 26015, 52030, 104060, 157799, 315598, 631196, 788995, 1577990, 1735789, 3155980, 3471578, 6785357, 6943156, 8678945, 13570714, 17357890, 19093679, 27141428, 33926785, 34715780, 38187358, 67853570, 74638927, 76374716, 95468395, 135707140, 149277854, 190936790, 298555708, 373194635, 381873580, 746389270, 821028197, 1492778540, 1642056394, 3284112788, 4105140985, 8210281970, 16420563940]

約数ペア:

[(1, 16420563940), (2, 8210281970), (4, 4105140985), (5, 3284112788), (10, 1642056394), (11, 1492778540), (20, 821028197), (22, 746389270), (43, 381873580), (44, 373194635), (55, 298555708), (86, 190936790), (110, 149277854), (121, 135707140), (172, 95468395), (215, 76374716), (220, 74638927), (242, 67853570), (430, 38187358), (473, 34715780), (484, 33926785), (605, 27141428), (860, 19093679), (946, 17357890), (1210, 13570714), (1892, 8678945), (2365, 6943156), (2420, 6785357), (4730, 3471578), (5203, 3155980), (9460, 1735789), (10406, 1577990), (20812, 788995), (26015, 631196), (52030, 315598), (104060, 157799)]