20309940

素因数分解:

$2^2\times 3^6\times 5^1\times 7^1\times {\mathrm{199}}^1$

素因数の和:233

約数の個数: 168

約数和(自身を含む): 73449600

約数和(自身を除く): 53139660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 199, 210, 243, 252, 270, 315, 324, 378, 398, 405, 420, 486, 540, 567, 597, 630, 729, 756, 796, 810, 945, 972, 995, 1134, 1194, 1215, 1260, 1393, 1458, 1620, 1701, 1791, 1890, 1990, 2268, 2388, 2430, 2786, 2835, 2916, 2985, 3402, 3582, 3645, 3780, 3980, 4179, 4860, 5103, 5373, 5572, 5670, 5970, 6804, 6965, 7164, 7290, 8358, 8505, 8955, 10206, 10746, 11340, 11940, 12537, 13930, 14580, 16119, 16716, 17010, 17910, 20412, 20895, 21492, 25074, 25515, 26865, 27860, 32238, 34020, 35820, 37611, 41790, 48357, 50148, 51030, 53730, 62685, 64476, 75222, 80595, 83580, 96714, 102060, 107460, 112833, 125370, 145071, 150444, 161190, 188055, 193428, 225666, 241785, 250740, 290142, 322380, 338499, 376110, 451332, 483570, 564165, 580284, 676998, 725355, 752220, 967140, 1015497, 1128330, 1353996, 1450710, 1692495, 2030994, 2256660, 2901420, 3384990, 4061988, 5077485, 6769980, 10154970, 20309940]

約数ペア:

[(1, 20309940), (2, 10154970), (3, 6769980), (4, 5077485), (5, 4061988), (6, 3384990), (7, 2901420), (9, 2256660), (10, 2030994), (12, 1692495), (14, 1450710), (15, 1353996), (18, 1128330), (20, 1015497), (21, 967140), (27, 752220), (28, 725355), (30, 676998), (35, 580284), (36, 564165), (42, 483570), (45, 451332), (54, 376110), (60, 338499), (63, 322380), (70, 290142), (81, 250740), (84, 241785), (90, 225666), (105, 193428), (108, 188055), (126, 161190), (135, 150444), (140, 145071), (162, 125370), (180, 112833), (189, 107460), (199, 102060), (210, 96714), (243, 83580), (252, 80595), (270, 75222), (315, 64476), (324, 62685), (378, 53730), (398, 51030), (405, 50148), (420, 48357), (486, 41790), (540, 37611), (567, 35820), (597, 34020), (630, 32238), (729, 27860), (756, 26865), (796, 25515), (810, 25074), (945, 21492), (972, 20895), (995, 20412), (1134, 17910), (1194, 17010), (1215, 16716), (1260, 16119), (1393, 14580), (1458, 13930), (1620, 12537), (1701, 11940), (1791, 11340), (1890, 10746), (1990, 10206), (2268, 8955), (2388, 8505), (2430, 8358), (2786, 7290), (2835, 7164), (2916, 6965), (2985, 6804), (3402, 5970), (3582, 5670), (3645, 5572), (3780, 5373), (3980, 5103), (4179, 4860)]