16216720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 41997312

約数和(自身を除く): 25780592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 503, 520, 620, 806, 1006, 1040, 1240, 1612, 2012, 2015, 2480, 2515, 3224, 4024, 4030, 5030, 6448, 6539, 8048, 8060, 10060, 13078, 15593, 16120, 20120, 26156, 31186, 32240, 32695, 40240, 52312, 62372, 65390, 77965, 104624, 124744, 130780, 155930, 202709, 249488, 261560, 311860, 405418, 523120, 623720, 810836, 1013545, 1247440, 1621672, 2027090, 3243344, 4054180, 8108360, 16216720]

約数ペア:

[(1, 16216720), (2, 8108360), (4, 4054180), (5, 3243344), (8, 2027090), (10, 1621672), (13, 1247440), (16, 1013545), (20, 810836), (26, 623720), (31, 523120), (40, 405418), (52, 311860), (62, 261560), (65, 249488), (80, 202709), (104, 155930), (124, 130780), (130, 124744), (155, 104624), (208, 77965), (248, 65390), (260, 62372), (310, 52312), (403, 40240), (496, 32695), (503, 32240), (520, 31186), (620, 26156), (806, 20120), (1006, 16120), (1040, 15593), (1240, 13078), (1612, 10060), (2012, 8060), (2015, 8048), (2480, 6539), (2515, 6448), (3224, 5030), (4024, 4030)]