438641320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{27211}}^1$

素因数の和:27266

約数の個数: 64

約数和(自身を含む): 1097187840

約数和(自身を除く): 658546520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 27211, 54422, 108844, 136055, 217688, 272110, 353743, 544220, 707486, 843541, 1088440, 1414972, 1687082, 1768715, 2829944, 3374164, 3537430, 4217705, 6748328, 7074860, 8435410, 10966033, 14149720, 16870820, 21932066, 33741640, 43864132, 54830165, 87728264, 109660330, 219320660, 438641320]

約数ペア:

[(1, 438641320), (2, 219320660), (4, 109660330), (5, 87728264), (8, 54830165), (10, 43864132), (13, 33741640), (20, 21932066), (26, 16870820), (31, 14149720), (40, 10966033), (52, 8435410), (62, 7074860), (65, 6748328), (104, 4217705), (124, 3537430), (130, 3374164), (155, 2829944), (248, 1768715), (260, 1687082), (310, 1414972), (403, 1088440), (520, 843541), (620, 707486), (806, 544220), (1240, 353743), (1612, 272110), (2015, 217688), (3224, 136055), (4030, 108844), (8060, 54422), (16120, 27211)]