16519980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11971}}^1$

素因数の和:12006

約数の個数: 48

約数和(自身を含む): 48271104

約数和(自身を除く): 31751124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 11971, 23942, 35913, 47884, 59855, 71826, 119710, 143652, 179565, 239420, 275333, 359130, 550666, 718260, 825999, 1101332, 1376665, 1651998, 2753330, 3303996, 4129995, 5506660, 8259990, 16519980]

約数ペア:

[(1, 16519980), (2, 8259990), (3, 5506660), (4, 4129995), (5, 3303996), (6, 2753330), (10, 1651998), (12, 1376665), (15, 1101332), (20, 825999), (23, 718260), (30, 550666), (46, 359130), (60, 275333), (69, 239420), (92, 179565), (115, 143652), (138, 119710), (230, 71826), (276, 59855), (345, 47884), (460, 35913), (690, 23942), (1380, 11971)]